a*i
发帖数: 1652 | 1 compatibility with a certain polymer
Insolubility in a certain solvent |
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r******0
发帖数: 2753 | 2 That's what needs to be found out. Or we call it scientific curiosity. |
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c*s
发帖数: 2145 | 3 Certainly one can make a great deal of this claiming. Maybe next step he can
also make deal of "acrylic-styrenic hybrid system" or sth else, hehe |
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r******0
发帖数: 2753 | 4 come on, u r a BAN ZHU now. don't be so mean. it could be someone's phd
project.
can |
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c*s
发帖数: 2145 | 5 hehe,我试图促使相关人士“有压力的思考”， 过后你会感到如释重负的愉悦，呵呵
其实我也有点迷糊，正在做一个all acrylic surfactant，不知道咋吹
come on, u r a BAN ZHU now. don't be so mean. it could be someone's phd
project.
can |
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n***s
发帖数: 1745 | 6 有的，日本有家公司有PMMA－PBA-PMMA的弹性体。阴离子聚合的。
只有pilot plant级别。呵呵，我手上有样品。 |
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a*i
发帖数: 1652 | 7 can you disclose the company? how may I request samples?
Thanks. |
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n***s
发帖数: 1745 | 8 是可乐丽的，不过有可能你要不到free sample。他们产量很小。还没推广，官方主页
上都没有介绍。
我是当时他们有人在德国拜罗伊特的一个会议上做报告的时候接触到的。 |
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a*i
发帖数: 1652 | 9 哦，谢谢你的信息。
既然谈到ATRP，就顺便来点牢骚。按理，一个好的活性聚合，应该可以做到低分散，高
分子量，以及干净的嵌段聚合。ATRP这些年，引无数英雄折腰，还是没捣出过个像样的
TPE（也许我错了？）。可见大家多浮躁。 |
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n***s
发帖数: 1745 | 10 不跑题，还是说这个高分子，下面是我了解到的的一些信息。
using (complex) initiator which consists of a bulky aluminum compound,
utilized in the presence of a Lewis base (polyethers, polyamine, etc.), in
Toluene from -30°C- -0°C
sec-BuLi, tert-BuLi, --- initiator.
isobutylbis(2,6-tert-butyl-4-methylphenoxy)aluminium ---- co-initiator.
2-dimethoxyethane (DME) ----- Lewis base.
PMMA含量分别为32％，或者是50％， 最终产物透明度可达91% |
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a*i
发帖数: 1652 | 11 thermoplastic elastomer, like Kraton. |
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f*a
发帖数: 93 | 12 之前的表述还不太明确。
这种材料常温下是液态，添加某种催化剂后，就交联起来，变成固态，elastomer，
弹性较大。
以前买过latex tube，但现在要做的更小，这样就买不到了。想用液态注入模具成型的
办法来制作更细的tube |
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f*a
发帖数: 93 | 13 另外，TPE形成的elastomer的硬度很难低到35 shore A吧
for. |
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a*i
发帖数: 1652 | 14 35 A is absolutely available with decent physical properties.
you can contact Kraton for more information. Polyurethane elastomers are
also good.
let me know if you can't find anything. |
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a*i
发帖数: 1652 | 15 来自主题: Macromolecules版 - eATRP Any point to share?
Is the reduced residual copper level good enough for implant?
All acrylic thermoplastic elastomers are being commercialized. Is it the
first commercialization of ATRP? What will be next?
在 amgood (我本善良) 的大作中提到: 】 |
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w********h
发帖数: 12367 | 16 1 PROG POLYM SCI 22.870
2 POLYM REV 8.000
3 ADV POLYM SCI 6.723
4 BIOMACROMOLECULES 5.325
5 MACROMOLECULES 4.837
6 SOFT MATTER 4.457
7 MACROMOL RAPID COMM 4.365
8 J POLYM SCI POL CHEM 3.894
9 POLYMER 3.828
10 J MEMBRANE SCI 3.673
11 CARBOHYD POLYM 3.463
12 MACROMOL BIOSCI 3.458
13 CELLULOSE 2.817
14 J BIOACT COMPAT POL 2.610
15 POLYM DEGRAD STABIL 2.594
16 REACT FUNCT POLYM 2.546
17 EUR POLYM J 2.517
18 COLLOID POLYM SCI 2.443
19 MACROMOL CHEM PHYS 2.437
20 EUR PHYS J E 2.096
21... 阅读全帖 |
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w********h
发帖数: 12367 | 17 1 PROG POLYM SCI 22.870
2 POLYM REV 8.000
3 ADV POLYM SCI 6.723
4 BIOMACROMOLECULES 5.325
5 MACROMOLECULES 4.837
6 SOFT MATTER 4.457
7 MACROMOL RAPID COMM 4.365
8 J POLYM SCI POL CHEM 3.894
9 POLYMER 3.828
10 J MEMBRANE SCI 3.673
11 CARBOHYD POLYM 3.463
12 MACROMOL BIOSCI 3.458
13 CELLULOSE 2.817
14 J BIOACT COMPAT POL 2.610
15 POLYM DEGRAD STABIL 2.594
16 REACT FUNCT POLYM 2.546
17 EUR POLYM J 2.517
18 COLLOID POLYM SCI 2.443
19 MACROMOL CHEM PHYS 2.437
20 EUR PHYS J E 2.096
21... 阅读全帖 |
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h****z
发帖数: 1996 | 18 来自主题: Macromolecules版 - 包子求文献 【 以下文字转载自 Chemistry 讨论区 】
发信人: hktkrz (hktk), 信区: Chemistry
标 题: 包子求文献
发信站: BBS 未名空间站 (Sun Dec 18 20:38:14 2011, 美东)
http://dx.doi.org/10.5254/1.3535144
Analysis of Morphology Formation in Elastomer Blends
Rubber Chem. Technol. 50, 292 (1977); doi:10.5254/1.3535144 (9 pages)
N. Tokita
Thanks! |
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w********h
发帖数: 12367 | 19 1 PROG POLYM SCI 24.100
2 POLYM REV 6.281
3 BIOMACROMOLECULES 5.479
4 POLYM CHEM-UK 5.321
5 MACROMOLECULES 5.167
6 MACROMOL RAPID COMM 4.596
7 SOFT MATTER 4.390
8 J POLYM SCI POL CHEM 3.919
9 ADV POLYM SCI 3.890
10 MACROMOL BIOSCI 3.886
11 J MEMBRANE SCI 3.850
12 CARBOHYD POLYM 3.628
13 CELLULOSE 3.600
14 POLYMER 3.438
15 J BIOACT COMPAT POL 2.953
16 POLYM DEGRAD STABIL 2.769
17 EUR POLYM J 2.739
18 REACT FUNCT POLYM 2.479
19 PLASMA PROCESS POLYM 2.468
20 MACROMOL CHEM PHYS 2.3... 阅读全帖 |
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w********h
发帖数: 12367 | 20 1 PROG POLYM SCI 26.383
2 POLYM REV 7.794
3 MACROMOLECULES 5.521
4 BIOMACROMOLECULES 5.371
5 POLYM CHEM-UK 5.231
6 MACROMOL RAPID COMM 4.929
7 J MEMBRANE SCI 4.093
8 SOFT MATTER 3.909
9 MACROMOL BIOSCI 3.742
10 PLASMA PROCESS POLYM 3.730
11 ADV POLYM SCI 3.648
12 J POLYM SCI POL CHEM 3.543
13 CARBOHYD POLYM 3.479
14 CELLULOSE 3.476
15 POLYMER 3.379
16 POLYM DEGRAD STABIL 2.770
17 EUR POLYM J 2.562
18 REACT FUNCT POLYM 2.505
19 MACROMOL CHEM PHYS 2.386
20 MACROMOL MATER ENG 2.3... 阅读全帖 |
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r********4
发帖数: 97 | 21 各位大侠
小弟刚毕业 化学PhD 一枚（Polymer/Organic chemistry). 研究背景是renewable
sustainable bio-based polymers and degradable stimuli-responsive polymers.
熟悉的领域有：
Polymer synthesis and characterization, natural macromolecules,
biodegradable polymers, stimuli-responsive polymers, green chemistry,
nanocomposite materials, thermoplastic elastomer materials.
最近有过5次审稿经历， 反响还不错。希望在这里多求得审稿机会。如有需要CV， 请
站内联系， 多谢各位啦！ |
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w********h
发帖数: 12367 | 22 Rank Full Journal Title Journal Impact Factor
1 PROGRESS IN POLYMER SCIENCE 26.854
2 BIOMATERIALS 8.312
3 Journal of Biomedical Nanotechnology 7.578
4 Polymer Reviews 6.593
5 MACROMOLECULES 5.927
6 BIOMACROMOLECULES 5.788
7 Acta Biomaterialia 5.684
8 Polymer Chemistry 5.368
9 ACS Macro Letters 5.242
10 JOURNAL OF MEMBRANE SCIENCE 4.908
11 EUROPEAN CELLS & MATERIALS 4.887
12 Advanced Healthcare Materials 4.880
13 MAC... 阅读全帖 |
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w********h
发帖数: 12367 | 23 Rank Full Journal Title Journal Impact Factor
1 CHEMICAL REVIEWS 45.661
2 NATURE MATERIALS 36.425
3 Nature Nanotechnology 33.265
4 CHEMICAL SOCIETY REVIEWS 30.425
5 PROGRESS IN MATERIALS SCIENCE 25.870
6 ACCOUNTS OF CHEMICAL RESEARCH 24.348
7 Nature Chemistry 23.297
8 Nano Today 18.432
9 Annual Review of Materials Research 15.629
10 Energy & Environmental Science 15.490
11 ADVANCED MATERIALS 15.409
12 Advanced Energy Mate... 阅读全帖 |
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k*******n
发帖数: 116 | 24 【 以下文字转载自 Statistics 讨论区 】
发信人: kongzifan (子曰), 信区: Statistics
标 题: 计算数学还是生物统计？
发信站: BBS 未名空间站 (Wed Aug 22 20:33:26 2007)
我计算数学的PhD念了三年了，今天秋季起也同时是本校生物统计的master学生。今天
和生统的advisor聊选课的事情，他说你到时候拿个数学PhD和一个生统的master，到底
是找哪方面的工作呢？这个问题把我问住了。他说你还不如干脆到生物统计系来读PhD
。到底是继续读计算数学的PhD，还是转到生统系读PhD，这个问题困扰我好久了。我的
计算数学做的是新材料elastomer的数值模拟，用到很多弹性力学，混合有限元，数值
分析的知识。做了大约一年时间了吧。我想如果继续念计算数学的话，将来可能可以到
石油、汽车制造、科研院所等行业工作，这些行业会需要一些高级的数值计算人才。不
过也许这些行业给计算数学的opening并不是很多。如果转到生统的话，也许就是去药
厂了。自己的专业一直是计算数学（以前国内念过研究生，专业也是计算数学），对计
算数学 |
|
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j****o
发帖数: 506 | 26 最近在做一个fea项目，needle piercing elastomer (non linear),用的ansys，用类
似材料可以收敛，用新材料怎么也收敛不了，刺穿前，stroke0.35mm就收敛不了了，网
格出现扭曲变形，mesh已经做的不错了，关键是同样条件为什么另外一个类似材料就能
做过去，这个就不行呢，这个的strain比我算过去的那个材料还小些，stress也要小些
，STROKE 步长已经非常小了。唯一这个材料可能就是non-linear程度可能大些，请问
有谁能指点一二，哪里设置有问题啊，谢谢 |
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D****R
发帖数: 6053 | 27 Pump should have an input shaft or a female coupling to receive the
mechanical input from a driver device. I did not see the input coupling for
the power take in.
Usually a water pump consists of a centrifugal impeller, shaft, two
supporting bearings, inlet port and discharge port arrangements.
If there is no snap ring to hold all internal parts in the housing at the
large opening, then the assembly need 过盈配合 including possible use of
elastomer material like "O" ring. Also it is possible to us... 阅读全帖 |
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g*****g
发帖数: 390 | 28 they may just use press fit to assembly and seal is realized by elastomer.
Also depends on pressure and temperature range in the application, press fit
could
work for low pressure and narrow temperature variance. |
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s*******e
发帖数: 135 | 29 [email protected]
/* */
非常感谢。 |
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H*********r
发帖数: 104 | 30 最近看到 Apple 在招聘一个做elastomers，plastics FEA的职位，刚好过去几年一直
用Abaqus做这些，不知道有没有朋友知道是哪个组在招？能否帮忙内推一下。
谢谢 |
|
发帖数: 1 | 31 方向：
Helical Dielectric Elastomer Actuator (HDEA)
Artificial Muscle
ElectroActive Polymers (EAP)
FEA
邮箱（长期有效）：
[email protected] |
|
b****m
发帖数: 366 | 32 我所在公司新出来一个职位，介绍如下。
如果有人感兴趣，可以发站内信联系。我可以帮助内推。
https://nacareers-cabot.icims.com/jobs/3601/scientist/job?hub=9
Position Summary:
Cabot Inkjet Colorants are colloidal dispersions, made with proprietary
treating agents. They are used in highly complex fluids -- inkjet inks --
which are aqeuous systems, but include organic solvents, polymers and
surfactants. This complex fluid must deliver ever-higher performance on
paper -- itself a very complex system.
The person who holds this position is expecte... 阅读全帖 |
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a*i
发帖数: 1652 | 33 http://www.tms.org/pubs/journals/jom/0909/pruitt-0909.html
Silicone has been utilized in breast implants since 1962; however, early
designs were prone to rupture and leaking.12 The first implants utilized low
viscosity forms of silicone gel encased in a solid silicone elastomer shell
but were prone to failure through tissue contracture around the implant or
rupture.12–14 Rupture of the implant shell enabled the silicone to leak
into the surrounding tissue, which could then elicit a chronic infla... 阅读全帖 |
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w*******y
发帖数: 60932 | 34 Sears has the below item on sale. In addition, the following savings may
apply:
Free Shipping on Tools over $99
Save on Your Tool Orders. $5 off $25, $10 off $60, $15 off $100 or more.
Items Sold by Sears. Offer ends 22-Feb-2011.
Discount applied in cart. Offer excludes Great Price, Clearance and items
with an Online Only Price, Hot price items. This offer can not be combined
with any other offers. Excludes items 00959631000P, 00959629000P. Additional
items may be excluded Offer good through 22-... 阅读全帖 |
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w*******y
发帖数: 60932 | 35 another nice Tool Deal from Big Sky Tool
Hitachi FDV16VB2 5/8" Hammer Drill VSR, 2-mode, 5.0 Amp:
http://bigskytool.com/Hitachi_FDV16VB2_58_Hammer_Drill_VSR_2-mo
(reconditioned)
$36.34 w/ coupon code BST992
Free shipping
5 Amp motor for improved performance
Variable speed control dial, located on trigger for ease during high-speed
or high-torque jobs
Impact to drilling switch, located conveniently on body of tool for quick
transition
Push button reversible drilling, allows for quick removal from... 阅读全帖 |
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j******3
发帖数: 18319 | 36 【 以下文字转载自 Chemistry 讨论区 】
发信人: OPTGC (1981), 信区: Chemistry
标 题: 大包子求全文
发信站: BBS 未名空间站 (Mon Aug 16 02:34:14 2010, 美东)
1）Maiti, M., Bhattacharya, M., Bhowmick, A.K.;
Elastomer nanocomposites
Rubber Chemistry and Technology 81 (3), pp. 384-469
2）"Reddy, A.S., Chen, C.-Y., Chen, C.-C., Jean, J.-S., Fan, C.-W., Chen, H.
-R., Wang, J.-C., Nimje, V.R.",
"Synthesis of gold nanoparticles via an environmentally benign route using a
biosurfactant",
2009,"Journal of Nanoscience and Nanotechnology",9,(11), |
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