Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Poly(methylmethacrylate-dimethylsiloxane) triblock copolymers synthesized by transition metal mediated living radical polymerization: bulk and surface characterization

Tools
- Tools
+ Tools

UNSPECIFIED (2003) Poly(methylmethacrylate-dimethylsiloxane) triblock copolymers synthesized by transition metal mediated living radical polymerization: bulk and surface characterization. EUROPEAN POLYMER JOURNAL, 39 (1). pp. 5-13.

Full text not available from this repository, contact author.

Request Changes to record.

Abstract

Well-defined poly(MMA-b-DMS-b-MMA) triblock copolymers were prepared by copper(l) mediated living radical polymerization. This was achieved by polymerization of methylmethacrylate (MMA) with different concentrations of 2-bromoisobutyrate terminated polydimethylsiloxane (PDMS). The polymerization occurred in controlled manner with the molecular weight found by H-1 NMR close to that predicted and a narrow molecular weight distribution (M-w/M-n similar to 1.2). Copolymers were obtained with M-n = 2100, 4900, 10 100 and 29 500 g mol(-1) respectively with poly(MMA) (PMMA) terminal blocks and a central PDMS block of 5500 gmol(-1) in each case.

DSC analysis showed most of the poly(MMA-b-DMS-b-MMA) triblock copolymers exhibits two T-g's, one at low temperature corresponding to the T-g of PDMS microphase and a second at high temperature corresponding to the T-g of the PMMA microphase. TEM images show microphase segregation morphology in bulk for the triblock copolymers, with a higher degree of segregation for copolymers containing higher PDMS content. XPS measurements were performed to determine the chemical composition at the surface. For all the copolymers PDMS enrichment is observed at the surface. Copolymers containing higher percentage of PDMS exhibit higher phase separation and better enrichment of PDMS at the surface. The surface tension determined by contact angle measurements of the copolymer film containing 59 mol% of PDMS was 19.15 mN m(-1). (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Journal or Publication Title: EUROPEAN POLYMER JOURNAL
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
ISSN: 0014-3057
Official Date: January 2003
Dates:
DateEvent
January 2003UNSPECIFIED
Volume: 39
Number: 1
Number of Pages: 9
Page Range: pp. 5-13
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item
twitter

Email us: publications@live.warwick.ac.uk
Contact Details
About Us