Properties of low molecular weight block copolymers. 3. Mixtures of styrene-dimethylsiloxane diblock copolymers with polystyrene

1982 ◽  
Vol 15 (2) ◽  
pp. 367-370 ◽  
Author(s):  
Zhong He Lu ◽  
Sonja Krause ◽  
Magdy Iskandar
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Diblock Copolymers ◽  
Low Molecular Weight

Block Copolymers Poly(2,6-dimethyl-1,4-phenylene oxide)-poly(6-hexanelactam). Preparation and Composition

1993 ◽  
Vol 58 (11) ◽  
pp. 2574-2582 ◽  
Author(s):  
Jaroslav Stehlíček ◽  
Rudolf Puffr
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Diblock Copolymer ◽  
Anionic Polymerization ◽  
Diblock Copolymers ◽  
Toluene Solution ◽  
Low Molecular Weight ◽  
Phenylene Oxide ◽  
End Groups ◽  
Tolylene Diisocyanate

Poly(2,6-dimethyl-1,4-phenylene oxide)-poly(6-hexanelactam) diblock copolymers were prepared from low-molecular weight poly(2,6-dimethyl-1,4-phenylene oxide) by transforming its phenolic end groups via the reaction with 2,4-tolylene diisocyanate and 6-hexanelactam to polymeric initiators and the subsequent anionic polymerization of 6-hexanelactam. The polymerization of 6-hexanelactam was carried out in bulk or toluene solution. The content of the 6-hexanelactam homopolymer was estimated by TLC showing that the pure diblock copolymer can be prepared in toluene. The reason for relatively low yields is discussed.

scholarly journals Low Molecular Weight pDMAEMA-block-pHEMA Block-Copolymers Synthesized via RAFT-Polymerization: Potential Non-Viral Gene Delivery Agents?

Polymers ◽  
2011 ◽  
Vol 3 (2) ◽  
pp. 693-718 ◽  
Author(s):  
Olga Samsonova ◽  
Christian Pfeiffer ◽  
Markus Hellmund ◽  
Olivia M. Merkel ◽  
Thomas Kissel
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Gene Delivery ◽  
Raft Polymerization ◽  
Viral Gene ◽  
Low Molecular Weight ◽  
Viral Gene Delivery
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