s********1
发帖数: 581 | 1 以下成分对人体有害或致癌吗？
一化妆品含以下成分：
aqua/eau
stearic acid
cetearyl alcohol
ceteareth-20
paraffin
triethanolamine
polyvinyl alcohol
phenoxyethanol
imidazolidinyl urea
methylparaben
propylene glycol
mica
titanium dioxide (cl77891)
感谢！ |
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b*******g
发帖数: 1309 | 3 poly ethylene glycol对Na+ binding 十分强， 在high energy collision下依然十分
稳定
但是这个分子是亲水的，跟你的输水描述不符合。。。 |
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x****h
发帖数: 300 | 4 Sawodny, Wolfgang; Niedenzu, Kurt; Dawson, John W. Vibrational spectrum of
ethylene glycol. Spectrochimica Acta, Part A: Molecular and Biomolecular
Spectroscopy (1967), 23(4), 799-806. CODEN: SAMCAS ISSN:1386-1425.
CAN 66:109842 AN 1967:109842 CAPLUS
thx |
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s********n
发帖数: 52 | 5 Title:
Surface Modification of Polydimethylsiloxane Substrates with Nonfouling Poly
(Poly(ethylene glycol)methacrylate) Brushes
Authors:
Stefano Tugulu, Harm-Anton Klok
Journal:
Macromolecular Symposia
Volume 279 Issue 1, Pages 103 - 109
Link: http://www3.interscience.wiley.com/journal/122406378/abstract
Please send the paper to s********[email protected]. Thank you very much. |
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d*****i
发帖数: 1 | 6 Title: Synthesis and characterization of gold nanoparticles based on
low generational triethylene glycol-polyamidoamine dendrimers
Source: Journal of Nanoscience and Nanotechnology 2010, 10, 2181-2184
please email to m********[email protected]
thanks! |
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d****i
发帖数: 360 | 7 One paper please! Thanks a lot! E-mail: x**********[email protected]
Biomacromolecules. ASAP
Synthesis, Self-Assembly, and Drug-Loading Capacity of Well-Defined
Cyclodextrin-Centered Drug-Conjugated Amphiphilic A14B7 Miktoarm Star
Copolymers Based on Poly(ε-caprolactone) and Poly(ethylene glycol) |
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d****i
发帖数: 360 | 8 One paper please! Thanks a lot! E-mail: x**********[email protected]
Preparation and pharmacodynamics of stearic acid and poly (lactic-co-
glycolic acid) grafted chitosan oligosaccharide micelles for 10-
hydroxycamptothecin
Show Abstract Zhou, Y.-Y., Du, Y.-Z., Wang, L., Yuan, H., Zhou, J.-P.,
Hu, F.-Q. 2010 International Journal of Pharmaceutics 393 (1-2), pp. 144-
152 |
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d****i
发帖数: 360 | 9 Please help me! Thanks a lot! E-mail: x**********[email protected]
Park, T. G., Lee, H. Y., and Nam, Y. S., A new preparation method for
protein loaded poly(D,L-lactic-co-glycolic acid) microspheres and protein
release mechanism study. J. Controlled Release, 55 (1998), 181-191 |
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p*******8
发帖数: 158 | 10 Netsu Sokutei Toronkai Koen Yoshishu
36 2000
Title: Interaction between Poly(ethylene glycol) and Water as Studied by DSC.
Author: HUANG L(Osaka City Univ., Osaka, Jpn) NISHINARI K(Osaka City Univ.
, Osaka, Jpn)
Pages: 210-
Thanks! |
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d****i
发帖数: 360 | 11 Help me, Please! Thanks a lot!
E-mail: x**********[email protected]
International Journal of Pharmaceutics
Volume 311, Issues 1-2, 27 March 2006, Pages 215-222
Effects of conditions for preparing nanoparticles composed of
aminoethylcarbamoyl-β-cyclodextrin and ethylene glycol diglycidyl ether on
trap efficiency of a guest molecule
Masaru Eguchia, Yong-Zhong Dua, 1, Yoshikatsu Ogawaa, Tomoko Okadaa,
Noboru Yumotob and Masato Kodakaa, |
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p****e
发帖数: 105 | 12 Synthesis of Poly(ethylene glycol)-Polydiacetylene Conjugates and Their
Micellar and Chromic Characteristics
Authors: Choi, Hye; Bae, Yun Mi; Yu, Gwang Sig; Huh, Kang Moo; Choi, Joon
Sig
Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 10,
October 2008 , pp. 5104-5108(5)
h******[email protected]
Thanks. |
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s**********r
发帖数: 67 | 13 文献信息：
Boca, S. C., M. Four, et al. (2009). "An ethylene-glycol decorated ruthenium
(II) complex for two-photon photodynamic therapy." Chemical Communications(
30): 4590-4592.
thanks a lot. |
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p****e
发帖数: 105 | 14 Please send to h******[email protected], many thanks.
J Nanosci Nanotechnol. 2008 Oct;8(10):5104-8.
Synthesis of poly(ethylene glycol)-polydiacetylene conjugates and their
micellar and chromic characteristics |
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h*******o
发帖数: 1114 | 15 请帮忙解一下这个红外谱，非常感谢！请吃大包子，没有包子就请真人吃饭。
样品是把milliQ的filter泡在水里几天，过滤，蒸发，浓缩为dried particle然后测红
外，milli Q filter本身带有一些polyethylene glycol, 麻烦问一下从下面这张谱图
还可以看出什么成分，肯定是mixture,就是不知道还会有什么，非常感谢！哪怕提供一
点线索也行，非常感谢！
Happy Thanksgiving! |
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s********n
发帖数: 235 | 16 1.Title: PHOTOINDUCED HYDROGEN-PRODUCTION FROM AN AQUEOUS-SOLUTION OF
ETHYLENE-GLYCOL OVER ULTRAFINE GOLD SUPPORTED ON TIO2
Author(s): BAMWENDA, GR; TSUBOTA, S; KOBAYASHI, T; et al.
Source: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY Volume: 77
Issue: 1 Pages: 59-67 DOI: 10.1016/1010-6030(94)80009-X Published:
JAN 4 1994
http://www.sciencedirect.com/science/article/pii/10106030948000
many thanks!
x********[email protected] |
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G******e
发帖数: 235 | 17 1)International Journal of Polymeric Materials and Polymeric Biomaterials
Volume 61, Issue 5, 2012
Carboxylate-Ended Poly(ethylene glycol) Macromonomers and their Copolymers
as Inhibitors for Calcium Phosphate and Calcium Sulfate |
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G******e
发帖数: 235 | 18 1)International Journal of Polymeric Materials and Polymeric Biomaterials
Volume 61, Issue 5, 2012
Carboxylate-Ended Poly(ethylene glycol) Macromonomers and their Copolymers
as Inhibitors for Calcium Phosphate and Calcium Sulfate |
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h***o
发帖数: 350 | 19 A novel all-solid electrolyte based on a co-polymer of poly-(methoxy/
hexadecal-poly(ethylene glycol) methacrylate) for lithium-ion cell
Xiang Zuo,a Xiao-Min Liu,a Feng Cai,a Hui Yang,*a Xiao-Dong Shen*b
and Gao Liuc
J. Mater. Chem., 2012,22, 22265-22271
DOI: 10.1039/C2JM34270G
http://pubs.rsc.org/en/content/articlelanding/2012/jm/c2jm34270
Thank you very much! |
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s********1
发帖数: 581 | 20 以下成分对人体有害或致癌吗？
一化妆品含以下成分：
aqua/eau
stearic acid
cetearyl alcohol
ceteareth-20
paraffin
triethanolamine
polyvinyl alcohol
phenoxyethanol
imidazolidinyl urea
methylparaben
propylene glycol
mica
titanium dioxide (cl77891)
感谢！ |
|
|
x*******6
发帖数: 994 | 22 请问混合时要加水吗？最终变为 SiO2是指多长时间？多谢 |
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y***o
发帖数: 416 | 23 如果加水了，SiCl4就是和水反应了。要好的均匀反应，可以使用无水有机溶剂如甲苯
。 |
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q****i
发帖数: 6923 | 24 Fabrication of mechanically robust antireflective films using silica
nanoparticles with enhanced surface hydroxyl groups
Y. Wang,a M. Y. Hea and R. Y. Chen*a
Show Affiliations
J. Mater. Chem. A, 2015,3, 1609-1618
Journal of Sol-Gel Science and Technology
August 2014, Volume 71, Issue 2, pp 291-296
Date: 01 May 2014
Sol–gel silica antireflective coating with enhanced abrasion-resistance
using polypropylene glycol as porogen
Improvement on contamination resistance to volatile organics and mo... 阅读全帖 |
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o**a
发帖数: 86 | 25 Kinetics of the free﹔adical copolymerization of isobornyl methacrylate and
diethylene glycol dimethacrylate in the entire composition range
Polymer Engineering and Science (Impact Factor: 1.24). 10/2006; 46(11):1641
- 1648. DOI: 10.1002/pen.20636
Many thanks! |
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b*******y
发帖数: 4 | 26 The projected starting date is August 2015; this date may be postponed for a
few months if needed. The major focus of the Li laboratory is to use
chemical biology means to understand the reactivity of nucleotide damages.
Research projects include: (1) to elucidate the formation and repair of a
thymine photo-dimer, 5-thyminyl-5,6-dihydrothymine, i.e. the spore
photoproduct (SP), and (2) to understand the stability of DNA lesions such
as 5,6-dihydro-2ʹ-deoxyuridine (dHdU) and 5,6-dihydroxy-5,... 阅读全帖 |
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w*********i
发帖数: 658 | 27 去年年底毕业后一直失业在家，喜欢躺床上，可能是心情有点郁闷吧，喝水运动都比以
前少了。从二月份开始
便秘，隔一天一次大便，但每次大便量非常小，而且很细，还时常拉稀（也是很细不成
型的）。总觉得肛门口有
大便没出来。每次结都没有痛快的感觉。上医院看过，开了Miralax(polyethylene
glycol)，除了大便每次都是稀
的，一点变化都没有。每天饭量也变小了，好在腹部不难受，就是屁多。很担心是不是
很严重的问题，估计还是
要再检查检查，不知有没有必要做肠镜。便秘很难治吗？有啥好办法吗？谢谢 |
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t***s
发帖数: 300 | 28 非处方的： prune juice， 纤维素
推荐一个处方的： polyethylene glycol 33500
看名字象是高分子多聚甘油，粉状，用水冲服，老少咸宜
多一句嘴：中医真是复杂
了。 |
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E*******d
发帖数: 172 | 30 differetial pressure sensor, 是叫差分压力仪吧？用来测量管路上距离5CM两点之间的
GLYCOL压力差. 压差不大, 不超过10KPA.
请有经验的同学推荐一个产品, 小型化的, 便宜的, 测量精度不要求很高, 输出
电压信号.
谢谢. |
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I****u
发帖数: 36 | 31 分别 用 NMR and IR 对 Poly(ethylene glycol) M.W. 1000 进行分析
C13 NMR 一个未知的特征峰在 190ppm
Proton NMR 一个未知的特征峰在 8.6ppm
红外分析， 1700左右cm-1 有明显的峰值
并且这个组分同甲基璜酰氯反应。
能是什么呢？ |
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w********h
发帖数: 12367 | 32 Dacron
A long-chain polyester made from ethylene glycol and terephthalic acid is a
basis of the fibre called Dacron. It is used in seat cushions, pillows and
mattresses. |
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c*w
发帖数: 50 | 33 I want to polymerize poly(ethylene glycol) and lactide in 150 degree, stannous
octoate as catalyst. no water and high vacuum is very important.
In fact, many papers have described the polymerization: a polymerization tube
or flask connected with vacuum pump.
However, i found it's very difficult to find a suitable flask and very
difficult to keep the vacuum during the reaction.
Anyone who do this can teach me?
Thanks a lot!! |
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c*w
发帖数: 50 | 34
Not exactly correct. PLA, PLGA and PLGA are hydrophibic, which makes the
implants or drug delivery devices opsonization in vivo. such shortcoming
results in a lot of work on the synthesis of Poly(ethylene glycol)-pLA
copolymers. |
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r******0
发帖数: 2753 | 35
The difference between alchol and ester is much larger than alchol and ether.
~~~~
C-NMR may be more sensitive on this case.
I do hope you are right. Low MW polymer and very good NMR might tell the
difference. What I did is give you other possibilities that you may need
consider. Another suggestion is to order some very low MW poly(ethylene
glycol) and see if you NMR can see the chain end. If yes, you are right; if
not, :(
overlap.
ends
good |
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s***a
发帖数: 4921 | 36 1. Poly(ethylene glycol)是否导电，应该是不导电的吧
2. 低分子量(380-460)的PEG是viscous liquid， 自然晾干或者在烘箱里面烘干，能否成
膜
3. 高分子量(10000)的是powder，可以溶于水，自然晾干或者在烘箱里面烘干，能否成膜
4. 用作不导电膜，哪一个比较好
Thanks |
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c*s
发帖数: 2145 | 37 I have commercial PEG (poly ethylene glycol) but their PDI is relatively
high (~1.2). How to fraction it to get narrower PDI, hopefully <1.10?
thanks |
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s*****i
发帖数: 146 | 38 Zhong Z, Lok MC, Dijkstra PJ, et al.
Structurally well-defined copolymers of poly(ethylene glycol) and low
molecular weight linear polyethylenimine as vectors for gene delivery
JOURNAL OF CONTROLLED RELEASE 101 (1-3): 406-408 Sp. Iss. SI JANg 3 2005
also working on PEG-PEI |
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s****e
发帖数: 2934 | 39 ☆─────────────────────────────────────☆
cds (红毛呼呼猪) 于 (Sat Sep 30 22:40:16 2006) 提到:
I have commercial PEG (poly ethylene glycol) but their PDI is relatively
high (~1.2). How to fraction it to get narrower PDI, hopefully <1.10?
thanks
☆─────────────────────────────────────☆
agostic (若即若离) 于 (Sun Oct 1 00:43:12 2006) 提到:
HPLC？
☆─────────────────────────────────────☆
cds (红毛呼呼猪) 于 (Sun Oct 1 16:13:00 2006) 提到:
now they ceased to provide this Mw peg LE
☆─────────────────────────── |
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n*****g
发帖数: 35 | 40 求一篇明尼苏达大学的博士论文，Ji, Shengxiang. I. Diamino telechelic
polybutadienes: Synthesis, characterization and melt coupling. II. Poly(
epsilon-caprolactone-beta-poly(ethylene glycol) polymeric nanoparticles for
drug delivery. III. Zirconia based cellulosic HPLC chiral stationary phase
for enantioseparations. (2006), 204 pp. CAN 147:143687 AN 2007:
714998 CAPLUS
还请大牛们不吝相助，小弟感激不尽，如果太大不方便发邮件的话，可以msn联系，
x********[email protected],可以的话就发到l***[email protected],thank you very much! |
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c******h
发帖数: 4573 | 41 terephthalic acid先跟过量的ethylene glycol反应
成Bis(2-hydroxyethyl)terephthalate然后再本体缩聚成PET
这个单体的熔点是105度
odian's book 93-95 |
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g*******8
发帖数: 30 | 42 来自主题: Macromolecules版 - 温敏性高分子 poly(oligo - ethylene glycol) methyl ether methacrylate or acrylate |
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m*****e
发帖数: 1506 | 45 水的极性大，相同温度下acrylamide聚合速率大得多。你看是不是把浓度或温度提高些
，或者加些引发剂 |
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e****m
发帖数: 8 | 46 Could you please tell me what's the influence of polarity of solvents on the
polymerization? Do you mean I should try to increase the initiator's
concentration?
Thanks a lot. |
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m*****e
发帖数: 1506 | 47 溶剂极性对聚合速率的影响非常大，尤其是自由集聚和，可以翻翻经典教科书。增加自
由基浓度应该有帮助
the |
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a****d
发帖数: 524 | 48 the polar solvent can stabilize the transaction radicals, and lower the
energy of transition state, so the rate will be accelerated, try to
introduce a little bit of AIBN etc ...
the |
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