✦ LIBER ✦

PBA–PMMA 3-Arm Star Block Copolymer Thermoplastic Elastomers

✍ Scribed by Bruno Dufour; Kaloian Koynov; Tadeusz Pakula; Krzysztof Matyjaszewski

Book ID: 102486654
Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 449 KB
Volume: 209
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.200800151

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A series of well‐defined poly(methyl methacrylate)‐block‐poly(butyl acrylate) 3‐arm star block copolymers have been synthesized by ATRP. The incorporation of polar hard segment of PMMA was made possible with the aid of halogen exchange technique. Phase‐separated morphology of cylindrical PMMA domains hexagonally arranged in the pBA matrix was observed by small angle X‐ray scattering in all studied materials. The mechanical and thermal properties of the PBA–PMMA 3‐arm star block copolymers have been thoroughly characterized and their thermoplastic elastomer behavior was studied. It was found that the tensile properties of these materials are comparable with those of their linear ABA type block copolymer counterparts with similar compositions.

magnified image

📜 SIMILAR VOLUMES

Polar Three-Arm Star Block Copolymer The

Polar Three-Arm Star Block Copolymer Thermoplastic Elastomers Based on Polyacrylonitrile

✍ Dufour, Bruno; Tang, Chuanbing; Koynov, Kaloian; Zhang, Ying; Pakula, Tadeusz; M 📂 Article 📅 2008 🏛 American Chemical Society 🌐 English ⚖ 994 KB

(Star PS)-block-(Linear PI)-block-(Star

(Star PS)-block-(Linear PI)-block-(Star PS) Triblock Copolymers– Thermoplastic Elastomers with Complex Branched Architectures

✍ Huang, Tianzi; Knauss, Daniel M. 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 590 KB

Novel thermoplastic elastomers. II. Prop

Novel thermoplastic elastomers. II. Properties of star-block copolymers of PSt-b-PIB arms emanating from cyclosiloxane cores

✍ Jung S. Shim; Joseph P. Kennedy 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 205 KB 👁 2 views

Select mechanical, thermal, and rheological properties of star-blocks consisting of 5-21 polystyrene-b-polyisobutylene (PSt-b-PIB) arms radiating from cyclosiloxane cores are described. The tensile properties of products containing 23-41 wt % of PSt are substantially higher (9.6 -23.8 MPa) than thos

Novel thermoplastic elastomers. I. Synth

Novel thermoplastic elastomers. I. Synthesis and characterization of star-block copolymers of PSt-b-PIB arms emanating from cyclosiloxane cores

✍ Jung S. Shim; Siddhartha Asthana; Naoki Omura; Joseph P. Kennedy 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 398 KB 👁 2 views

The synthesis and characterization of novel thermoplastic elastomers consisting of multiple polystyrene-b-polyisobutylene (PSt-b-PIB) arms emanating from cyclosiloxane cores is described. The synthesis involved the sequential living cationic block copolymerization of styrene (St) and isobutylene (IB

Novel thermoplastic elastomers. III. Syn

Novel thermoplastic elastomers. III. Synthesis, characterization, and properties of star-block copolymers of poly(indene-b-isobutylene) arms emanating from cyclosiloxane cores

✍ Jung S. Shim; Joseph P. Kennedy 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 281 KB 👁 2 views

Novel thermoplastic elastomers (TPEs) consisting of poly(isobutylene-bindene) (PIB-b-PInd) arms radiating from hexamethylcyclohexasiloxane (D 6 H ) cores were prepared, characterized, and their properties investigated. The syntheses of these star-blocks involved the linking by hydrosilation of PInd-

Miscibility, Microstructure, and Dynamic

Miscibility, Microstructure, and Dynamics of Blends Containing Block Copolymer. 3. Molecular Motion in Homopolystyrene and Polystyrene/Four-Arm Styrene-Butadiene Star Block Copolymer Blends

✍ Feng, Hanqiao; Feng, Zhiliu; Shen, Liangfang 📂 Article 📅 1994 🏛 American Chemical Society 🌐 English ⚖ 417 KB