Functional segmented polymer networks based on polytetrahydrofuran and poly(vinylbenzyl chloride)

Abstract

Functional segmented polymer networks (FSPNs) were synthesised via free radical initiated copolymerisation of polytetrahydrofuran (PTHF) bis-macromonomers with vinylbenzyl chloride (VBCl). The purpose of this work was to create FSPNs, providing supports with a functional group that can be substituted and may serve to immobilise other reagents such as catalysts. After the preparation and detailed characterisation of several PTHF bis-macromonomers, FSPNs were prepared with varying molecular weight of the PTHF chain and varying PTHF/ PVBCl ratio. Measurements of the soluble fraction and elemental analyses demonstrated that FSPNs with a wide composition range could be prepared. From dynamic-mechanical and thermal analyses, it could be concluded that most FSPNs showed some degree of compatibility and complete absence of crystallinity. The mechanical properties of the FSPNs are directly related to their composition. The degree of substitution of all networks is close to quantitative.

Continuous ATRP Synthesis of Block‐Like Copolymers via Column Reactors: Design and Validation of a Kinetic Model

“…These supported catalysts consist of catalyst sites that are tethered to an underlying supporting material, like silica or polymers. [7,[10][11][12][13][14] To facilitate recovery and recycling of the catalyst, Shen et al [15,16] developed a continuous supported ATRP (C-SATRP) process to synthesize homopolymers and block-like copolymers in a continuous way (Figure 1). With this set-up, copolymers of methyl methacrylate (MMA) and butyl methacrylate (nBuMA) were synthesized via two column reactors in series containing a silica-supported ATRP catalyst.…”

“…To avoid copper contamination after ATRP, the immobilization of the catalytic system is indispensable. These supported catalysts consist of catalyst sites that are tethered to an underlying supporting material, like silica or polymers 7, 10–14. To facilitate recovery and recycling of the catalyst, Shen et al15, 16 developed a continuous supported ATRP (C‐SATRP) process to synthesize homopolymers and block‐like copolymers in a continuous way (Figure 1).…”