Mechanical pretreatment of polymer melts: Critical aspects and new rheological investigations on a linear and a long-chain branched polypropylene

2021 ◽  
Vol 65 (5) ◽  
pp. 871-885
Author(s):  
Helmut Münstedt
Keyword(s):  
Polymer Melts ◽  
Mechanical Pretreatment ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene ◽  
Critical Aspects

Rheological behavior of blends from a linear and a long-chain branched polypropylene

2005 ◽  
Vol 49 (5) ◽  
pp. 1059-1079 ◽  
Author(s):  
Jens Stange ◽  
Claudia Uhl ◽  
Helmut Münstedt
Keyword(s):  
Rheological Behavior ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

A new grafting monomer for synthesizing long chain branched polypropylene through melt radical reaction

Polymer ◽  
2012 ◽  
Vol 53 (1) ◽  
pp. 121-129 ◽  
Author(s):  
Zhenjiang Zhang ◽  
Dong Wan ◽  
Haiping Xing ◽  
Zhijie Zhang ◽  
Haiying Tan ◽  
...  
Keyword(s):  
Radical Reaction ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

scholarly journals Synergistic lignin construction of a long-chain branched polypropylene and its properties

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 38120-38127
Author(s):  
Bo Tian ◽  
Jinfeng Li ◽  
Zhigang Li ◽  
Ningdi Xu ◽  
Gang Yao ◽  
...  
Keyword(s):  
Chain Branching ◽  
Long Chain Branching ◽  
Foaming Property ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

Polypropylene with long chain branching behavior was constructed by lignin, which foaming property and polarity were improved.

Effect of leaving group in dithiocarbamates on mediating melt radical reaction during preparing long chain branched polypropylene

Polymer ◽  
2012 ◽  
Vol 53 (4) ◽  
pp. 947-955 ◽  
Author(s):  
Haiping Xing ◽  
Zhiwei Jiang ◽  
Zhenjiang Zhang ◽  
Jian Qiu ◽  
Yanhui Wang ◽  
...  
Keyword(s):  
Radical Reaction ◽  
Leaving Group ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

Oriented crystallization of long chain branched polypropylene induced by step-shear deformation in pre-crystallization regime

Polymer ◽  
2017 ◽  
Vol 116 ◽  
pp. 395-402 ◽  
Author(s):  
Shinichi Kitade ◽  
Hideo Kurihara ◽  
Kazuo Asuka ◽  
Satoshi Katsuno ◽  
Isamu Akiba ◽  
...  
Keyword(s):  
Shear Deformation ◽  
Oriented Crystallization ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

Preparation and Characterization of Long Chain Branched Polypropylene through UV Irradiation and Coagent Use

2015 ◽  
Vol 54 (14) ◽  
pp. 1425-1438 ◽  
Author(s):  
Yasaman Amintowlieh ◽  
Costas Tzoganakis ◽  
Alexander Penlidis
Keyword(s):  
Uv Irradiation ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

scholarly journals Foams with Enhanced Ductility and Impact Behavior Based on Polypropylene Composites

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 943 ◽  
Author(s):  
Santiago Muñoz-Pascual ◽  
Cristina Saiz-Arroyo ◽  
Zina Vuluga ◽  
Mihai Cosmin Corobea ◽  
Miguel Angel Rodriguez-Perez
Keyword(s):  
Elastic Modulus ◽  
Cellular Structure ◽  
Glass Fibers ◽  
Halloysite Nanotubes ◽  
Impact Behavior ◽  
Impact Performance ◽  
Polypropylene Composites ◽  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene

In this work, formulations based on composites of a linear polypropylene (L-PP), a long-chain branched polypropylene (LCB-PP), a polypropylene–graft–maleic anhydride (PP-MA), a styrene-ethylene-butylene-styrene copolymer (SEBS), glass fibers (GF), and halloysite nanotubes (HNT-QM) have been foamed by using the improved compression molding route (ICM), obtaining relative densities of about 0.62. The combination of the inclusion of elastomer and rigid phases with the use of the LCB-PP led to foams with a better cellular structure, an improved ductility, and considerable values of the elastic modulus. Consequently, the produced foams presented simultaneously an excellent impact performance and a high stiffness with respect to their corresponding solid counterparts.

Investigating the disentanglement of long chain branched polypropylene under different shear fields

2021 ◽  
pp. 51642
Author(s):  
Mingjin Liu ◽  
Jin Chen ◽  
Jiaxu Luo ◽  
Jie Min ◽  
Qiang Fu ◽  
...  
Keyword(s):  
Branched Polypropylene ◽  
Long Chain ◽  
Long Chain Branched Polypropylene ◽  
Shear Fields
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