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You searched for: Source 2019 v.57 no.10 Remove constraint Source: 2019 v.57 no.10 Subject differential scanning calorimetry Remove constraint Subject: differential scanning calorimetry
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1. Nascent particle sizes and degrees of entanglement are responsible for the significant differences in impact strength of ultrahigh molecular weight polyethylene

Author:
Zhang, Huan; Zhao, Shicheng; Yu, Xin; Xin, Zhong; Ye, Chunlin; Li, Zhi; Xia, Jincheng
Source:
Journal of polymer science 2019 v.57 no.10 pp. 632-641
ISSN:
0887-6266
Subject:
Raman spectroscopy; crystal structure; differential scanning calorimetry; impact strength; industrial applications; molecular weight; particle size; polyethylene; rheological properties; rheometers; scanning electron microscopy; thermal properties
Abstract:
... The physical properties of ultrahigh molecular weight polyethylene (UHMWPE) are generally highly dependent on its molecular weight. However, in our study, it was found that two UHMWPE samples of similar molecular weight, SLL‐5 and GUR 4150, have significantly different impact strengths, with the Charpy impact strength of GUR 4150 being almost 3.4 times that of SLL‐5. To reveal the reasons, the str ...
DOI:
10.1002/polb.24819

2. Water structure and mobility in acrylamide copolymer glycohydrogels with galactose and siloxane pendant groups

Author:
Fogel, April L.; Ravichandran, Ashwin; Mani, Sriramvignesh; Upadhyay, Bishal; Khare, Rajesh; Morgan, Sarah E.
Source:
Journal of polymer science 2019 v.57 no.10 pp. 584-597
ISSN:
0887-6266
Subject:
acrylamides; composite polymers; differential scanning calorimetry; dynamic vapor sorption method; galactose; hydrogels; hydrogen bonding; hydrophobicity; molecular dynamics; nuclear magnetic resonance spectroscopy; silane; simulation models; surfactants; thermogravimetry; water content
Abstract:
... Glycohydrogels containing 2′‐acrylamidoethyl‐β‐d‐galactopyranoside and varying levels of N,N′ methylene bisacrylamide and 3‐acrylamidopropyltris(trimethylsiloxy)silane were synthesized to determine the effects of crosslinker and amphipathic balance on equilibrium water content (EWC), bound water population, and hydrogen bonding dynamics at the water–polymer interface. Analogous dimethylacrylamide ...
DOI:
10.1002/polb.24815