Synthesis of high-molecular-weight rodlike polyamides and block copolymers

1982 ◽  
Vol 20 (11) ◽  
pp. 3241-3249 ◽  
Author(s):  
J. Preston ◽  
W. R. Krigbaum ◽  
R. Kotek
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
High Molecular Weight

scholarly journals Synergistic toughening of polypropylene with ultra-high molecular weight polyethylene and elastomer-olefin block copolymers

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23994-24002 ◽  
Author(s):  
Lucheng Qi ◽  
Lei Wu ◽  
Ren He ◽  
Hui Cheng ◽  
Boping Liu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Rheological Properties ◽  
High Molecular Weight ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Ultra High Molecular Weight

Blends of polypropylene (PP) and ultra-high molecular weight polyethylene (UHMWPE) with elastomer-olefin block copolymers (OBC) were prepared using an ultrasonic twin-screw extruder, and their mechanical and rheological properties were investigated.

scholarly journals Free-standing thermo-responsive nanoporous membranes from high molecular weight PS-PNIPAM block copolymers synthesized via RAFT polymerization

2017 ◽  
Vol 8 (14) ◽  
pp. 2235-2243 ◽  
Author(s):  
Merve Cetintas ◽  
Joris de Grooth ◽  
Anton H. Hofman ◽  
Hanne M. van der Kooij ◽  
Katja Loos ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
High Molecular Weight ◽  
Raft Polymerization ◽  
Nanoporous Membranes ◽  
Free Standing

Free-standing, fully reversible thermo-responsive nanoporous membranes were fabricated from PS-PNIPAM block copolymers.

scholarly journals Development of surface properties of ultra-high-molecular-weight polyethylene film using side-chain crystalline block copolymers

2020 ◽  
Vol 40 (3) ◽  
pp. 231-236 ◽  
Author(s):  
Sho Hirai ◽  
Shoichi Ishimoto ◽  
Patchiya Phanthong ◽  
Shigeru Yao
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
High Molecular Weight ◽  
Surface Properties ◽  
Functional Unit ◽  
Side Chain ◽  
Adhesive Properties ◽  
High Adhesion ◽  
Adhesion Contact ◽  
Ultra High Molecular Weight

AbstractUltra-high-molecular-weight polyethylene (UHMWPE) has been widely used in industry; however, the applications for UHMWPE are limited because of low hydrophilic and adhesive properties. Herein, we developed the surface properties of UHMWPE by using side-chain crystalline block copolymers (SCCBCs), which consist of a side-chain crystalline unit and a functional unit. This process only required immersing the UHMWPE film in the diluted SCCBC solution, which enabled the UHMWPE surface to be coated homogeneously. The results of the contact angle and tensile shear test showed that the surface of UHMWPE modified with SCCBC was improved in hydrophilicity and adhesive properties. In addition, high adhesion strength was measured on UHMWPE surfaces dipped in a SCCBC solution at high temperature with the UHMWPE film becoming elongated at all parts other than the adhesion contact area.

High Molecular Weight Block Copolymers by Sequential Monomer Addition via Cu(0)-Mediated Living Radical Polymerization (SET-LRP): An Optimized Approach

2013 ◽  
Vol 2 (10) ◽  
pp. 896-900 ◽  
Author(s):  
Athina Anastasaki ◽  
Christopher Waldron ◽  
Paul Wilson ◽  
Cyrille Boyer ◽  
Per B. Zetterlund ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
High Molecular Weight ◽  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Sequential Monomer Addition
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