A novel synthesis of PP-b-PMMA copolymers via metallocene catalysis and borane chemistry

Tze-chiang Chung, H. L. Lu, W. Janvikul

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

This paper describes a novel route to prepare polypropylene diblock copolymers, such as PP-b-PMMA, which comprise a polypropylene and free radical polymerized polymer segment. The chemistry involves a transformation process from metallocene catalysis to borane chemistry. Firstly, polypropylene with chain end unsaturation was prepared by metallocene catalysts, such as Et(Ind) 2 ZrCl 2 /MAO. Secondly, the olefinic chain end was hydroborated by 9-BBN to produce borane terminated PP. Thirdly, the borane group at the chain end was selectively oxidized and interconverted to polymeric radical which then initiated radical polymerization to produce diblock copolymers. Despite the heterogeneous reaction conditions, the overall yield and structure of diblock copolymers are quite satisfactory. In addition, the chain extension process, showing no significant broading in molecular weight distribution, implies a 'stable' radical polymerization.

Original languageEnglish (US)
Pages (from-to)1495-1502
Number of pages8
JournalPolymer
Volume38
Issue number6
DOIs
StatePublished - Jan 1 1997

Fingerprint

Boranes
Polypropylenes
Polymethyl Methacrylate
Catalysis
Block copolymers
Copolymers
Free radical polymerization
Monoamine Oxidase
Molecular weight distribution
Free radicals
Free Radicals
Polymers
Catalysts
metallocene

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Chung, Tze-chiang ; Lu, H. L. ; Janvikul, W. / A novel synthesis of PP-b-PMMA copolymers via metallocene catalysis and borane chemistry. In: Polymer. 1997 ; Vol. 38, No. 6. pp. 1495-1502.
@article{4941d63ea3de4fa6942c0fe107446adf,
title = "A novel synthesis of PP-b-PMMA copolymers via metallocene catalysis and borane chemistry",
abstract = "This paper describes a novel route to prepare polypropylene diblock copolymers, such as PP-b-PMMA, which comprise a polypropylene and free radical polymerized polymer segment. The chemistry involves a transformation process from metallocene catalysis to borane chemistry. Firstly, polypropylene with chain end unsaturation was prepared by metallocene catalysts, such as Et(Ind) 2 ZrCl 2 /MAO. Secondly, the olefinic chain end was hydroborated by 9-BBN to produce borane terminated PP. Thirdly, the borane group at the chain end was selectively oxidized and interconverted to polymeric radical which then initiated radical polymerization to produce diblock copolymers. Despite the heterogeneous reaction conditions, the overall yield and structure of diblock copolymers are quite satisfactory. In addition, the chain extension process, showing no significant broading in molecular weight distribution, implies a 'stable' radical polymerization.",
author = "Tze-chiang Chung and Lu, {H. L.} and W. Janvikul",
year = "1997",
month = "1",
day = "1",
doi = "10.1016/S0032-3861(96)00854-3",
language = "English (US)",
volume = "38",
pages = "1495--1502",
journal = "Polymer",
issn = "0032-3861",
publisher = "Elsevier BV",
number = "6",

}

A novel synthesis of PP-b-PMMA copolymers via metallocene catalysis and borane chemistry. / Chung, Tze-chiang; Lu, H. L.; Janvikul, W.

In: Polymer, Vol. 38, No. 6, 01.01.1997, p. 1495-1502.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A novel synthesis of PP-b-PMMA copolymers via metallocene catalysis and borane chemistry

AU - Chung, Tze-chiang

AU - Lu, H. L.

AU - Janvikul, W.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - This paper describes a novel route to prepare polypropylene diblock copolymers, such as PP-b-PMMA, which comprise a polypropylene and free radical polymerized polymer segment. The chemistry involves a transformation process from metallocene catalysis to borane chemistry. Firstly, polypropylene with chain end unsaturation was prepared by metallocene catalysts, such as Et(Ind) 2 ZrCl 2 /MAO. Secondly, the olefinic chain end was hydroborated by 9-BBN to produce borane terminated PP. Thirdly, the borane group at the chain end was selectively oxidized and interconverted to polymeric radical which then initiated radical polymerization to produce diblock copolymers. Despite the heterogeneous reaction conditions, the overall yield and structure of diblock copolymers are quite satisfactory. In addition, the chain extension process, showing no significant broading in molecular weight distribution, implies a 'stable' radical polymerization.

AB - This paper describes a novel route to prepare polypropylene diblock copolymers, such as PP-b-PMMA, which comprise a polypropylene and free radical polymerized polymer segment. The chemistry involves a transformation process from metallocene catalysis to borane chemistry. Firstly, polypropylene with chain end unsaturation was prepared by metallocene catalysts, such as Et(Ind) 2 ZrCl 2 /MAO. Secondly, the olefinic chain end was hydroborated by 9-BBN to produce borane terminated PP. Thirdly, the borane group at the chain end was selectively oxidized and interconverted to polymeric radical which then initiated radical polymerization to produce diblock copolymers. Despite the heterogeneous reaction conditions, the overall yield and structure of diblock copolymers are quite satisfactory. In addition, the chain extension process, showing no significant broading in molecular weight distribution, implies a 'stable' radical polymerization.

UR - http://www.scopus.com/inward/record.url?scp=0031100984&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031100984&partnerID=8YFLogxK

U2 - 10.1016/S0032-3861(96)00854-3

DO - 10.1016/S0032-3861(96)00854-3

M3 - Article

AN - SCOPUS:0031100984

VL - 38

SP - 1495

EP - 1502

JO - Polymer

JF - Polymer

SN - 0032-3861

IS - 6

ER -