Structure-rheology relationships of long-chain branched polypropylene: Comparative analysis of acrylic and allylic coagent chemistry

被引：68

作者：

Parent, J. Scott ^{[1
]}

Bodsworth, Aidan ^{[1
]}

Sengupta, Saurav S. ^{[1
,2
]}

Kontopoulou, Marianna ^{[1
]}

Chaudhary, Bharat I. ^{[2
]}

Poche, Drew ^{[3
]}

Cousteaux, Stephane ^{[3
]}

机构：

[1] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada

[2] Dow Chem Co USA, Piscataway, NJ 08854 USA

[3] Dow Chem Co USA, Freeport, TX 77541 USA

来源：

POLYMER | 2009年 / 50卷 / 01期

关键词：

Polypropylene; Long-chain branching; Rheology; GURP-PALMEN-PLOT; REACTIVE EXTRUSION; CROSS-LINKING; POLYMERS; POLYETHYLENES; MECHANISM;

D O I：

10.1016/j.polymer.2008.11.014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The relationship between product structure and melt-state theological properties is established for series of branched PP derivatives prepared by the radical-mediated grafting of tri-functional coagents. Peroxide-initiated, solvent-free additions of linear PP to triallyl trimesate (TAM), trimethylol propane triacrylate (TMPTA) and triallyl phosphate (TAP) at high temperature are shown to produce bimodal molecular weight and branching distributions. Low-frequency dynamic shear viscosities as well as extensional viscosities are shown to be highly responsive to a hyper-branched chain population, whose abundance and molecular weight correlate with the kinetic chain length of the grafting process, and the propensity of a coagent to oligomerize. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：85 / 94

页数：10

共 25 条

[1] Long-chain branched polypropylenes by electron beam irradiation and their rheological properties [J].

Auhl, D ;

Stange, J ;

Münstedt, H ;

Krause, B ;

Voigt, D ;

Lederer, A ;

Lappan, U ;

Lunkwitz, K .

MACROMOLECULES, 2004, 37 (25) :9465-9472

[2] THE POLYMERIZATION OF ALLYL COMPOUNDS .2. PRELIMINARY KINETIC STUDY OF THE PEROXIDE-INDUCED POLYMERIZATION OF ALLYL ACETATE [J].

BARTLETT, PD ;

ALTSCHUL, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1945, 67 (05) :816-822

[3] DETERMINATION OF DISCRETE RELAXATION AND RETARDATION TIME SPECTRA FROM DYNAMIC MECHANICAL DATA [J].

BAUMGAERTEL, M ;

WINTER, HH .

RHEOLOGICA ACTA, 1989, 28 (06) :511-519

[4] Long chain branching on linear polypropylene by solid state reactions [J].

Borsig, E. ;

van Duin, M. ;

Gotsis, A. D. ;

Picchioni, F. .

EUROPEAN POLYMER JOURNAL, 2008, 44 (01) :200-212

[5] Effect of long branches on the rheology of polypropylene [J].

Gotsis, AD ;

Zeevenhoven, BLF ;

Tsenoglou, CJ .

JOURNAL OF RHEOLOGY, 2004, 48 (04) :895-914

[6] Synthesis of branched polypropylene by a reactive extrusion process [J].

Graebling, D .

MACROMOLECULES, 2002, 35 (12) :4602-4610

[7] Diagnosing long-chain branching in polyethylenes [J].

Janzen, J ;

Colby, RH .

JOURNAL OF MOLECULAR STRUCTURE, 1999, 485 :569-584

[8] CROSS-LINKING OF POLYPROPYLENE BY PEROXIDE AND MULTIFUNCTIONAL MONOMER DURING REACTIVE EXTRUSION [J].

KIM, BK ;

KIM, KJ .

ADVANCES IN POLYMER TECHNOLOGY, 1993, 12 (03) :263-269

[9] New results on the correlation molecular architecture-melt elasticity-blowing process-film properties for conventional and metallocene-catalyzed polyethylenes [J].

Leal, Virginia ;

Lafuente, Pilar ;

Alicante, Raquel ;

Perez, Ruth ;

Santamaria, Anton .

MACROMOLECULAR MATERIALS AND ENGINEERING, 2006, 291 (06) :670-676

[10] Effect of long-chain branches of polypropylene on rheological properties and foam-extrusion performances [J].

Nam, GJ ;

Yoo, JH ;

Lee, JW .

JOURNAL OF APPLIED POLYMER SCIENCE, 2005, 96 (05) :1793-1800

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