Zhang, Xian Zhao, Shicheng Meng, Xin Xin, Zhong
Published in
Journal of Polymer Research
The influence of the nucleating agent that supported on polyhedral oligomeric silsesquioxanes (supported NA) on the properties of iPP was investigated in detail. It was found that the supported NA have higher nucleating efficiency than the original NA powder in the iPP system. The flexural modulus of iPP increased by 11.6% with 0.04 wt.% original N...
He, Zhe Zhang, Yue-Fei Li, Yan
Published in
Journal of Polymer Research
The effect of three β-nucleating agents (β-NA) on the relative content of β-crystal (Kβ(DSC)) in isotactic polypropylene (iPP) at different concentrations, cooling rate and isothermal crystallization temperature were mainly studied by differential scanning calorimetry (DSC). Aromatic diamides (TMB-5), rare earth complexes (WBG-II) and calcium pimel...
Létoffé, Adrien
Au cours de la dernière décennie, la prise de conscience écologique a impacté les domaines de la recherche. Pour diminuer la production de gaz à effet de serre de nombreux changements sont à apporter aux modes de consommations. Dans le domaine des transports, plusieurs pistes de recherche sont possibles comme l’allégement des structures. L’une des ...
Shi, Qiankun Fu, Long Yang, Yang Li, Kun Wang, Quan Liu, Baochen Zhang, Xiaoli Chen, Jingbo
Published in
Journal of Polymer Research
Melt strength is crucial in foam-processing of polymer materials, especially for linear molecular structured isotactic polypropylene (iPP), which has comparatively weak melt strength to hinder its foaming. In this study, a commercial high melt strength polypropylene (HMSPP) was added into the iPP matrix, cooperated with a thermal treatment, aiming ...
Zhang, Yue-Fei Mao, Jing-Jing
Published in
Journal of Polymer Research
A series of hydrazide compounds were synthesized and employed as nucleating agents for isotactic polypropylene (iPP). The effect of different structures of hydrazide compounds on the crystallization and melting behaviour of iPP was studied by differential scanning calorimetry (DSC). The results demonstrate that almost all nucleating agents are α-nu...
Garcia Contreras, Antonio
Plastics have now invaded our daily lives. They are the symbol of the consumer society, because they are considered a non-noble material: consumers equate it with a disposable product after use. Since plastics are not degradable, they represent a real danger to the environment, fauna and flora.The objective of this thesis work was to develop in col...
Meng, Xin Tong, Chuangchuang Xin, Zhong Gong, Weiguang Shi, Yaoqi Chen, Weijie Sheng, Yan
Published in
Journal of Polymer Research
The effects of a combined system consisting of zeolite13X (Z13X) and the α nucleating agent sodium 2,2′-methylene-bis(4,6-di-tertbutylphenyl)-phosphate (NA-11) on the mechanical and crystallization properties of polypropylene (iPP) were studied in detail. The results show that the addition of Z13X to iPP/NA-11 not only increases the mechanical prop...
Wang, Yu-Jie Yan, Su-Ying Zhao, Zhi-Ping Xi, Zhen-Yu
Published in
Chinese Journal of Polymer Science
The growing demand for non-toxic solvents for membrane preparation has motivated the studies for green and sustainable alternatives of solvents. The effect of droplet isothermal growth within the liquid-liquid phase separation region on isothermal spherulitic growth rate of isotactic polypropylene (iPP) was investigated. The results showed that the...
Layachi, A. Makhlouf, A. Frihi, D. Satha, H. Belaadi, A. Seguela, R.
The non-isothermal crystallization (NIC) of isotactic polypropylene (iPP) and its composites with submicronic talc particles (μ-talc) was investigated by differential scanning calorimetry. The modeling of the NIC kinetics of the iPP matrix was performed using Jeziorny-modified Avrami’s model, Ozawa’s and Mo’s theoretical approaches. The Jeziorny’s ...
Bo, Yang Zhaoyi, He Lu, Li Xingyue, Sheng Zengheng, Hao
Published in
Journal of Polymer Research
To control the polymorphic and crystallization behavior of β-nucleated isotactic polypropylene / graphene oxide (β-iPP/GO) composites for bridge pavement, the roles of β-nucleating agent (β-NA) concentration and GO content in the polymorphic crystallization behavior, morphology and crystallization kinetics were studied by means of differential scan...
