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You searched for: Journal Journal of polymer science Remove constraint Journal: Journal of polymer science Publication Year 2019 Remove constraint Publication Year: 2019 Subject impact strength Remove constraint Subject: impact strength Subject term impact strength Remove constraint Subject term: impact strength
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1. Effect of the Metal Phenylphosphonates on the Nonisothermal Crystallization and Performance of Isotactic Polypropylene

Author:
Xiaofeng Jiang; Shicheng Zhao; Xin Meng; Zhong Xin
Source:
Journal of polymer science 2019 v.57 no.3 pp. 161-173
ISSN:
0887-6266
Subject:
aluminum; calcium; crystallization; impact strength; molybdenum; optical properties; polypropylenes; temperature; viscoelasticity
Abstract:
... The use of metal phenylphosphonates as efficient nucleating agents (NAs) for isotactic polypropylene (iPP) is reported and a possible structural correlation to the nucleation efficiency is studied. First, three kinds of metal phenylphosphonates are synthesized via reflux method: Ca(C₆H₅PO₃)•2H₂O (CaPPA), Ca(C₆H₅PO₃H)₂ (CaPPA2), and Al(HO₃PC₆H₅)(O₃PC₆H₅)•H₂O (AlPPA2). Then, the nonisothermal crysta ...
DOI:
10.1002/polb.24767

2. Nascent particle sizes and degrees of entanglement are responsible for the significant differences in impact strength of ultrahigh molecular weight polyethylene

Author:
Huan Zhang; Shicheng Zhao; Xin Yu; Zhong Xin; Chunlin Ye; Zhi Li; Jincheng Xia
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

3. Preparation of ZnO nanoparticle‐reinforced polyamide 6 composite by in situ‐coproduced method and their properties

Author:
Qijie Xu; Ning Zhang; Wei Li; Shuang Zhang; Weiwei He
Source:
Journal of polymer science 2019 v.57 no.2 pp. 165-170
ISSN:
0887-624X
Subject:
X-ray diffraction; crystal structure; crystallization; differential scanning calorimetry; impact strength; melting; nanocomposites; polyamides; polymerization; temperature; tensile strength; thermal properties; thermogravimetry; transmission electron microscopy; zinc oxide
Abstract:
... Polyamide 6/ZnO nanocomposites (noted as PA6/ZnO) were prepared by an in situ co‐producing method, during which Zn₂(OH)₂CO₃ decomposed into nano‐ZnO in the process of the opening‐ring polymerization of caprolactam at high temperature. Transmission electron microscopy, X‐ray diffraction, thermogravimetric analysis, and differential scanning calorimetry were used to analyze the size and dispersive p ...
DOI:
10.1002/pola.29282