e****e
发帖数: 2740 | 1 Surfactant vs non-emulsifying
很奇怪希望去乳化效应，但是同时加入surfactant 和non emulsifier 这不是矛盾吗？ |
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M**U
发帖数: 2752 | 2 帮老公求
与Surfactant, cartilage, nano particles, interface有关的。 |
|
d*****8
发帖数: 369 | 3 关键字：Synthesis，Characterization， Anionic Surfactants，Polypyrrole
elemental analysis (CHNS-O), Fourier Transform Infra- Red (FTIR) and Field
Emission Scanning Electron Microscope (FESEM)
有本领域的同学请把个人基本情况，工作单位，学校邮箱发给我。
最好有EDAS账户，一并告诉我。 |
|
j**********g
发帖数: 59 | 4 目前急需审稿机会，影响因子不限，本人主要研究领域为colloid science/
interfacial phenomena/surfactant chemistry，其他方向比如nanomaterials,
adsorption,chromatography,separation,和molecular dynamics simulations 也可以
胜任。请发站内信联系，可附上CV供参考。多谢先！ |
|
b*****e
发帖数: 41 | 5 想快速学习一些surfactant的东西， 中文最好。 |
|
j**********g
发帖数: 59 | 6 目前急需审稿机会，影响因子不限，本人主要研究领域为colloid science,
interfacial phenomena, surfactant chemistry，其他方向比如nanomaterials,
adsorption,chromatography,separation,和MD (BD)simulations 也可以胜任。请发站
内信联系，可附上CV供参考。多谢先！ |
|
j**********g
发帖数: 59 | 7 目前急需审稿机会，影响因子不限，本人主要研究领域为colloid science,
interfacial phenomena, surfactant chemistry，其他方向比如nanomaterials,
adsorption,chromatography,separation,和MD (BD)simulations 也可以胜任。请发站
内信联系，可附上CV供参考。多谢先！ |
|
j**********g
发帖数: 59 | 8 目前急需审稿机会，影响因子不限，本人主要研究领域为colloid science/
interfacial phenomena/surfactant chemistry，其他方向比如nanomaterials,
adsorption,chromatography,separation,和MD (BD)simulations 也可以胜任。请发站
内信联系，可附上CV供参考。多谢先！ |
|
c*w
发帖数: 50 | 9 We know that when the Csurf. > cmc, the micelles form in the aqueous
surfactant solution.
My question is: take Tween 80 as an example. If the solution contains 90%
tween 80 and 10% water(v/v), is it still a micelle solution?
Thanks for the answer! |
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b*******n
发帖数: 29 | 10 In concentrated surfactant-water mixtures, self-assembled liquid crystalline
structures are formed. |
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m**p
发帖数: 2471 | 11 http://books.google.com/books/about/Surface_Tension_of_Pulmonar
Surface Tension of Pulmonary Surfactant Systems
Pulmonary surfactant facilitates respiration by reducing the surface tension
in the alveoli. To study the surface activity of pulmonary surfactant films
under physiologically relevant conditions, several experimental methods
were developed to measure surfactant film interfacial tension with
Axisymmetric Drop Shape Analysis (ADSA). Using a pendant drop method, the
film formation of a th... 阅读全帖 |
|
f**********g
发帖数: 2252 | 12 Analysis of Surfaxin Data Presented in First Peer-Reviewed Manuscript
Describing the Consequences of Reintubation in Preterm Neonates
3 hours 8 minutes ago - PMZ via Comtex
GlobeNewswireDiscovery Laboratories, Inc. (Nasdaq:DSCO) announced that the
Journal of Neonatal-Perinatal Medicine, a prominent, peer-reviewed journal
widely distributed to neonatal and pediatric intensive care physicians,
recently published a manuscript reviewing an important data analysis from
the Surfaxin(R) (lucinactant) P... 阅读全帖 |
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a*****5
发帖数: 94 | 13 Title: Investigating the solubilization of oil in Gemini surfactant micelles
by using lattice Monte Carlo simulation
Abstract: In this study we investigated the mixing behavior of the Gemini
surfactants (T11H1SnH1T11 ,n=2,4,6,8) and oils (Tn ,n=2,3,4 ) in aqueous
solutions by using lattice Monte Carlo simulation method. The results show
that adding oil to the surfactant solution results in decreasing the CMC.
Investigating the changes of the CMC vs. the spacer length shows that
increasing the sp... 阅读全帖 |
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t*******3
发帖数: 2005 | 14 我不认为那个多伦多的博士学位是假的,理由如下：
1。有id在生物版里说陆骏申请千人计划的时候提供了MIT的Robert Langer的推荐信:
发信人: zyh (CH2O), 信区: Biology
标 题: Re: 一件奇怪的事
发信站: BBS 未名空间站 (Fri Jul 27 07:45:16 2012, 美东)
陆骏 claimed that he was a postdoc from Robert Langer and was working at
Merck before his application. He applied for 1000 young talents through two
universities at the same time. In his application package, he provided the
recommendation letter from Langer.
==============================================
2。有人查到Langer和lu Jun（非耶鲁卢军）合作的文章：... 阅读全帖 |
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k******y
发帖数: 1407 | 15 这个事情越来越好玩了，不知道ProQuest上的数据全不全，但是
ProQuest上用 Jun Lu 和 Toronto的确可以搜出两个论文
PhD的dissertation：
Surface tension of pulmonary surfactant systems
Diss.Lu, Jun. University of Toronto (Canada), 2004. NQ91775.
Master的thesis：
A study of lung surfactant (BLES) and dipalmitoyl phosphatidylcholine (DPPC)
films using axisymmetric drop shape analysis (ADSA)
Diss.Lu, Jun. University of Toronto (Canada), 1999. MQ46078.
但是两篇论文都是 Department of Mechanical and Industrial Engineering
而且父亲名字都是Tse-pei Tseng， 明显作者是一个人，但是显然... 阅读全帖 |
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t*******3
发帖数: 2005 | 16 我不认为那个多伦多的博士学位是假的,理由如下：
1。有id在生物版里说陆骏申请千人计划的时候提供了MIT的Robert Langer的推荐信:
发信人: zyh (CH2O), 信区: Biology
标 题: Re: 一件奇怪的事
发信站: BBS 未名空间站 (Fri Jul 27 07:45:16 2012, 美东)
陆骏 claimed that he was a postdoc from Robert Langer and was working at
Merck before his application. He applied for 1000 young talents through two
universities at the same time. In his application package, he provided the
recommendation letter from Langer.
==============================================
2。有人查到Langer和lu Jun（非耶鲁卢军）合作的文章：... 阅读全帖 |
|
f*1
发帖数: 837 | 17 You may want to try the concentrate version and make solutions yourself as
directed. Make sure you add some kind of surfactant like this one:
http://www.amazon.com/Bonide-097-Turbo-Spreader-Sticker/dp/B000
Or if that's too troublesome to get, just add a few ounces of liquid soap as
a homemade surfactant per gallon of solution.
As always, read and follow the labels carefully. |
|
f*1
发帖数: 837 | 18 Grassy weeds like crabgrass and poa annua are harder to control post-
emergently because they are also grasses. Broadleaf weeds like chickweed
and oxalis are easier to control post-emergently because they are not
grasses. All the above four can be effectively controlled by most pre-
emergent herbicides (i.e. crabgrass preventers).
Coalpilerd already identified chickweed in your first picture, although I
saw more poa annua there than chickweed so I reminded you the grassy ones as
well. Your se... 阅读全帖 |
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i**b
发帖数: 918 | 19 洗涤剂不过是surfactant而已，别的我不知道，如果是手洗洗碗的话，不用洗涤剂是完
全不可能把油腻和细菌清理干净的。
如果让我决定吃一点无害的surfactant还是吃细菌和油腻的话……表面活性剂是一个更
好的选择…… |
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m**p
发帖数: 2471 | 20 http://www.mie.utoronto.ca/labs/last/recent.htm
392. Lu, J.J., Yu, L.M.Y., Cheung, W.W.Y., Policova, Z., Li, D., Hair, M.L
., and Neumann, A.W.: “The Effect of Concentration on the Bulk Adsorption
of Bovine Lipid Extract Surfactant (BLES)”, Colloids Surfaces B:
Biointerfaces 29, 119-130, 2003.
393. Lu, J.J., Cheung, W.W.Y., Yu, L.M.Y., Policova, Z., Li, D., Hair, M.L
., and Neumann, A.W.: “The Effect of Dextran to Restore Dynamic Surface
Tension Properties of Pulmonary Surfactant Inhibited b... 阅读全帖 |
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|
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r******s
发帖数: 3662 | 23 【 以下文字转载自 NanoST 讨论区 】
发信人: rayfalls ( b), 信区: NanoST
标 题: [大包子求帮助]金属nanoparticle如何在溶剂中分散？
发信站: BBS 未名空间站 (Wed Feb 16 11:08:47 2011, 美东)
小弟不才，摸索着做这破玩意也快两年了，可是每次做出来的particle分散性时好时不
好，surfactant用
的是oleic acid，在phenyl ether中需要加热到200度。清洗是用酒精和正己烷hexane
反复洗三次，洗完
之后有时能分散进非极性溶剂比如说甲苯,有的能分散进极性溶剂比如说丙酮，有时候
啥也分散不进去。
跟别人讨论有的说洗的太多了把surfactant都洗掉了，也看有的人做的时候最后洗完再
加一滴oleic acid
然后加1:3 hexane/methanol摇匀后去掉上清液再分撒，这招也是时灵时不灵，有时候
能分散很好，有
时候进TEM看还是一团粘在一起的。
在此不惜散尽家产请求各位大牛帮助，有帮助的给建议的双簧包，有帮助的十个大包子
，谢谢各位了。 |
|
a*****e
发帖数: 4936 | 24 汽车(automotive)
消泡剂(antifoam)
农业(Agricultural)
烷基芳基硅氧基硅油(Alkylaryl siloxane)
汽车保养(Auto care)
上光剂(Polish formulation)
后处理(Post-finishing)
脱模(Release)
工业脱模剂(Industrial Release Agents)
再喷涂(Paintable)
表面活性剂(Surfactant)
上面的汉语对不对？
==================
car
boat
gum
rain
antifoam
solvent
emulsion
siloxane
alkylaryl
surfactants
polyether
对应的通用的汉语是什么？
多谢！ |
|
|
y***o
发帖数: 416 | 26 A PhD in Chemistry is required. Organic Chemistry preferred with three years
of experience working with chemical synthesis and organic chemistry.
Experience and/or knowledge of chemical manufacturing process development
and scale-up processes, or background in chemical synthesis and organic
chemistry. Minimum of three years bench work experience in synthetic organic
chemistry (preferably surfactant chemistry). Preferred experience in
surfactant industry. Industrial chemicals applications prefer... 阅读全帖 |
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T**M
发帖数: 658 | 27 Synthesis and Properties of Three Series Amino Acid Surfactants
Weihong Qiao, Zhibo Zheng, Huan Peng, and Lu Shi (2012)
Tenside Surfactants Detergents: Vol. 49, No. 2, pp. 161-166
Thank you very much! |
|
q****i
发帖数: 6923 | 28 Comparative Study of Liquid−Solid Phase Transition of Nitrogen in
Controlled Pore Glass and SBA-15: Accurate Pore Size of Conventional
Mesoporous Materials
Kunimitsu Morishige, Hiroaki Uematsu, and Noriko Tateishi
J. Phys. Chem. B, 2004, 108 (22), pp 7241–7246
Access to Ultralarge-Pore Ordered Mesoporous Materials through Selection of
Surfactant/Swelling-Agent Micellar Templates
Michal Kruk
Acc. Chem. Res., 2012, 45 (10), pp 1678–1687
Pore Size Distribution of Porous Glasses: ... 阅读全帖 |
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q****i
发帖数: 6923 | 29 (35) Blas, H.; Save, M.; Pasetto, P.; Boissiere, C.; Sanchez, C.;
Charleux, B. Langmuir 2008, 24, 13132–13137.
(23) Hah, J. S.; Kim, B. J.; Jeon, S. M.; Koo, Y. E. Chem. Commun.
2003, 14, 1712–1713.
Particle Size Control of Colloidal Suspensions of Mesostructured Silica
Andreas Berggren and Anders E. C. Palmqvist
J. Phys. Chem. C, 2008, 112 (3), pp 732–737
Surfactant-Free Synthesis of Colloidal Poly(methyl methacrylate)/Silica
Nanocomposites in the Absence of Auxiliary Comonomers
M. J. Percy and... 阅读全帖 |
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c*s
发帖数: 2145 | 30 btw, can I use reisen to remove surfactant?
In some cases, you can not completely remove surfactant using semipermeable
memberane.
detail, |
|
c*******n
发帖数: 1648 | 31 Very useful for polymer blends. Compatibilizers are surfactants basically.
However, small molecular surfactants are more complicated than block
copolymers.
Very interesting. |
|
d****o
发帖数: 44 | 32 要求,surfactant free, 20-60 nm之间,接近monodisperse,固含量大于2-wt.%吧.现已知
的方法有surfactant free 聚合,但是这个尺度的乳液固含量太低,约0.02-wt.%,还有微乳
液聚合,但是表面活性剂太多,dialysis后可能不稳定.请各位有此经验的提供一个简便易
行的方法,或提供一些参考文献目录,或者哪个公司产这种东西,请不吝赐教.方法越多越好
,越简单越好,多谢! |
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c*s
发帖数: 2145 | 33
by
matter
intiator,because
phase
coating
hehe, the sulfate group is not from surfactant, but from initiator.
Furthermore, geenrally PMMA latex can be obtained from soapless emulsion PM,
it also has negative charge.
The rational combination of surfactant and initiator is critical in the
particle stability. |
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b**s
发帖数: 589 | 34 来自主题: Macromolecules版 - 换种说法 粒径均一，平均5微米的高分子颗粒，不用聚合的方法， 如何用物理的方法得到？
目前有方法：
1： 高分子溶解在有机溶剂中，然后分散到surfactant的溶液中，最后蒸发掉有机溶
剂
缺点：分布还是宽
2。 高分子溶解在有机溶剂中，在超声波的作用下从微孔中inject到溶有surfactant
的carrier溶液中
缺点：最小粒径20微米
3。 Spray Dry, 缺点：分布很宽
还有什么方法吗？
如果没有， 有没有好的高分子颗粒分级的方法，除了过滤，离心和cytometry （都不
可靠） |
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c*w
发帖数: 50 | 35 来自主题: Macromolecules版 - 换种说法 what polydispersity means:分布宽？
if you devote some time in method 1, you could get something maningful. should
doing enough experiments to find the feeling of obtaining monodispersity PLGA
particles.some factors: the stirrer used, the beaker shape(high and slim one
better), surfactant concentration..
【 在 boss (养蜂人) 的大作中提到: 】
溶
高分子溶解在有机溶剂中，在超声波的作用下从微孔中inject到溶有surfactant
不 |
|
p******g
发帖数: 92 | 36 I'm looking for inexpensive bio-degradable polymers that can form viscous
solutions when dissolved in water. I want to suspend some inorganic particles
in water. can you give me some suggestions? I heard that some surfactants can
also be used to make viscous solutions. Is that true? what are some
surfactants that are commonly used? thank you in advance. |
|
j****x
发帖数: 943 | 37 This is a typical surface tension related problem. Because of the huge
curvature in capillaries, which is inversely proportional to the tube radius
, you could add surfactant on one side, and hopefully, the fluid inside will
move by itself towards the side without surfactant. Nothing else is
required. |
|
d********y
发帖数: 7 | 38 the graph shows an isovolumetric pressure-flow curve obtained at 25% of
total lung capacity. an increase in which of the following is most likely to
increase the plateau value of the expiratory flow rate?
a. airway resistance
b. amount of surfactant in the alveolar space
c. ciliary beating frequency
d. expiratory effort
e. lung volume
f. parasympathetic activity of fibers innervating the airways
I chose B. because surfactant decrease resistance. but the answer is lung
volume. |
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k*******n
发帖数: 2399 | 39 I have been working on the dispersion and characterization of synthesized
SWNTs for a couple of monthes. In most cases, surfactant aided dispersion
by using water as solvent will give better signals compared with using organic
solvents like DMF, DMA. MWNT should not give appreciable signals, but DWNTs do.
Surfactants good for dispersion are DOC, sodium cholate, SDS, et. al.. If
you still did not get nice spectra, your SWNTs might not be of high purity.
For some SWNTs, the remaining impurities li |
|
r******s
发帖数: 3662 | 40 小弟不才，摸索着做这破玩意也快两年了，可是每次做出来的particle分散性时好时不
好，surfactant用
的是oleic acid，在phenyl ether中需要加热到200度。清洗是用酒精和正己烷hexane
反复洗三次，洗完
之后有时能分散进非极性溶剂比如说甲苯,有的能分散进极性溶剂比如说丙酮，有时候
啥也分散不进去。
跟别人讨论有的说洗的太多了把surfactant都洗掉了，也看有的人做的时候最后洗完再
加一滴oleic acid
然后加1:3 hexane/methanol摇匀后去掉上清液再分撒，这招也是时灵时不灵，有时候
能分散很好，有
时候进TEM看还是一团粘在一起的。
在此不惜散尽家产请求各位大牛帮助，有帮助的给建议的双簧包，有帮助的十个大包子
，谢谢各位了。 |
|
l****u
发帖数: 3130 | 41 姓 名： 袁 荃 Yuan _ Quan
出生年月：1982年2月
学历： 博士， 教授
专业方向：分析化学
电 话：
Email：y*********[email protected]
教育与研究经历
2000年9月– 2004年7月：武汉大学化学学士学位
2004年9月– 2009年7月：北京大学无机化学博士学位导师：严纯华院士
2009年9月-2011年12月：佛罗里达大学化学系博士后谭蔚泓教授课题组
2011年12月-现在：武汉大学化学学院教授
代表性成果
1.Quan Yuan, Yun-Fei Zhang, Ruo-Wen Wang, Chao-Lin Du, Emir Yasun, Yan Chen,
and Wei-Hong Tan* “Using Silver Nanowire Antennas to Enhance the
Conversion Efficiency of Photoresponsive DNA Nanomotors” Proc. Natl. Acad.
Sci. U. S. A. 2011, 108, 9331.
2.Quan Yuan, Hao-Hong ... 阅读全帖 |
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x*******6
发帖数: 994 | 43 不知发此版是否合适。
现在在做碳黑分散在水或有机溶剂中，准备先对碳黑作酸处理，然后加分散剂， 考虑
用non-ionic surfactant, Triton X100. 当分散剂加到一定剂量， 如 2 wt% 以上时
（比如2 wt%, 2.5 wt% 和3.0 wt%），suspension 放很长时间不再sediment. 但不知
如何表征2 wt%, 2.5 wt% 和3.0 wt%之间的差别， 也可能溶液太黑，分辨不出具体差
别。另一问题是，怎样分析上述溶液的溶解度， 也就是分析碳黑在溶液中可分散的最
大量。 本人没有表面化学，有机和高分子的背景，希望大牛给点解释，并推荐分析方
法或文献。 多谢。 |
|
发帖数: 1 | 44 如题
本人背景：
化工专业，从事石油化工领域，主要研究方向包括：rheology, fracturing fluid,
polymer gels,polymer/surfactant nanoparticle, interfacial rheology, passive
microrheology , control release |
|
n**********o
发帖数: 1016 | 45 https://www.nae.edu/MediaRoom/178117.aspx
Abadi, Martín, principal scientist, Google Inc., Palo Alto, Calif. For
contributions to the formal theory of computer security.
Abrahamson, Norman A., chief engineering seismologist, Pacific Gas &
Electric Co., Piedmont, Calif. For contributions to seismic hazard
assessment and for leadership in engineering seismology and earthquake
engineering.
Adams, Robert W., senior fellow, Analog Devices Inc., Acton, Mass. For
contributions to digital storage and... 阅读全帖 |
|
r****9
发帖数: 4961 | 46 http://www.kindermor...ob_postings.cfm
Senior Petrophysicist
Job ID #: 3934 Location: TX-HOUSTON
Functional Area: Engineering Position Type: Full Time
Experience Required: More than 10 years Relocation Provided:
Education Required: Bachelors Degree
RC/Department: 1078 -CO2-FLD OPS SACROC PROD ENGIN :CO2
Position Description
•This position is responsible for providing petrophysical support for
maximizing economic recovery from producing properties and... 阅读全帖 |
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E****a
发帖数: 118 | 47 网上看到一个Development Chemist职位，有人可以内推一下我么，感激不尽！
Design, formulate, and develop inks for inkjet printers. Develop and utilize
expertise in pigments, dyes, polymers, dispersions, surfactants, water
souble organic compounds and solvents. Utilize knowledge of colloid and
color science. Research and identify causes of formulation, design or
technical problems. Carry out analysis and evaluation of new materials and
formulations to ensure that fundamentals are fully understood, basic
problems are solved, ... 阅读全帖 |
|
e*******a
发帖数: 134 | 48 Position Available at SyntheZyme LLC
Fermentation/Biochemical Engineer
Position summary:
SyntheZyme LLC is building an integrated renewable products company using
breakthrough science and an innovative business model to address some of our
planet’s most challenging problems. SyntheZyme first developed its
technology platforms in -HydroxyFatty Acids and Biosurfactants in
the laboratory of Professor Richard A. Gross at NYU-Poly (Brooklyn, NY).
These renewable chemical products are the resu... 阅读全帖 |
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h*d
发帖数: 19309 | 49 Roundup commercial formulations were never submitted to test by the United
States Environmental Protection Agency (EPA); its main active
ingredient, glyphosate, received EPA Toxicity Class of III for oral and
inhalation exposure.[9]
Beyond the glyphosate salts content, commercial formulations of Roundup
contain surfactants, which vary in nature and concentration. As a result,
human poisoning with this herbicide is not with the main active ingredient
alone, but with complex and variable mi |
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m**********2
发帖数: 6568 | 50 有的surfactant很毒的。glyphosate倒是对人的毒性很低。
United
result,
ingredient |
|
