scholarly journals Effect of Molecular Weight of Polymeric Solvent on Ion Conductive Behavior in Poly(propylene oxide) Solution of LiClO4

1983 ◽  
Vol 15 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Masayoshi Watanabe ◽  
Junko Ikeda ◽  
Isao Shinohara
Keyword(s):  
Molecular Weight ◽  
Propylene Oxide ◽  
Poly Propylene

Aluminum porphyrin complexes via delicate ligand design: emerging efficient catalysts for high molecular weight poly(propylene carbonate)

RSC Advances ◽  
2014 ◽  
Vol 4 (96) ◽  
pp. 54043-54050 ◽  
Author(s):  
Xingfeng Sheng ◽  
Yong Wang ◽  
Yusheng Qin ◽  
Xianhong Wang ◽  
Fosong Wang
Keyword(s):  
Carbon Dioxide ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Ligand Design ◽  
Poly Propylene ◽  
High Molecular Weight Poly

Due to the deep concern over residual, toxic cobalt or chromium, bifunctional aluminum porphyrin complexes were prepared to catalyze the copolymerization of propylene oxide and carbon dioxide.

Ultrahigh-Molecular-Weight Poly(propylene oxide): Preparation and Perspectives

Synlett ◽  
2019 ◽  
Vol 31 (07) ◽  
pp. 641-647 ◽  
Author(s):  
Patrick Walther ◽  
Charlotte Vogler ◽  
Stefan Naumann
Keyword(s):  
Molecular Weight ◽  
Propylene Oxide ◽  
High Molecular Mass ◽  
Side Reactions ◽  
Future Perspectives ◽  
Polymer Architectures ◽  
Ultrahigh Molecular Weight ◽  
End Groups ◽  
Poly Propylene ◽  
And Control

Conventional approaches for polymerizing substituted epoxides, especially propylene oxide, suffer from side reactions, severely limiting molar masses and control over the end groups of the resulting poly(propylene oxide) (PPO). This has not only complicated the incorporation of PPO moieties into complex defined polymer architectures, but has also hampered consideration of PPO as an interesting material in its own right. In this context, a concise summary of strategies for creating truly high-molecular-mass polyethers is provided, with a focus on a recently developed dual catalytic setup that permits access to PPO molar masses of 106 g/mol and beyond. Based on these advances in the catalytic preparation of polyethers, future perspectives for ultrahigh-molecular-weight (UHMW) PPO as a performance material are identified.

scholarly journals Effect of Molecular Weight on Cloud Point of Aqueous Solution of Poly (ethylene oxide)–Poly (propylene oxide) Alternating Multiblock Copolymer

2020 ◽  
Vol 69 (5) ◽  
pp. 449-453
Author(s):  
Tasuku Horiuchi ◽  
Kazuaki Rikiyama ◽  
Kenji Sakanaya ◽  
Yusuke Sanada ◽  
Keisuke Watanabe ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
Ethylene Oxide ◽  
Cloud Point ◽  
Propylene Oxide ◽  
Multiblock Copolymer ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Propylene
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