Determination of molecular weight and size distribution and branching characteristics of PVAc by means of size exclusion chromatography/multi- angle laser light scattering (SEC/MALLS)

被引：79

作者：

Grcev, S ^{[1
]}

Schoenmakers, P ^{[1
]}

Iedema, P ^{[1
]}

机构：

[1] Univ Amsterdam, Dept Chem Engn, NL-1018 Amsterdam, Netherlands

来源：

POLYMER | 2004年 / 45卷 / 01期

关键词：

SEC/MALLS; random branching; branching characteristics;

D O I：

10.1016/j.polymer.2003.10.077

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

SEC/MALLS has been applied for the determination of molecular weight and size distributions and to quantify branching in polyvinyl acetate (PVAc). Linear and branched samples obtained by solution and bulk polymerization were analyzed. The molecular weight distribution of the branched polymer was broader and the mean square radius was found to be smaller, 38.8 nm (with molecular weight of 770 000), than for the linear polymer, 42.3 nm (with molecular weight of 740 000). Branching characteristics could be determined by using Zimm and Stockmayer equations. It has been found that the number of branches for the branched sample increases from about 1 to 9, per molecule, with increasing molecular weight. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：39 / 48

页数：10

共 39 条

[1] Studies on microgels. 5. Synthesis of microgels via living free radical polymerisation [J].

Abrol, S ;

Caulfield, MJ ;

Qiao, GG ;

Solomon, DH .

POLYMER, 2001, 42 (14) :5987-5991

[2] SIZE EXCLUSION CHROMATOGRAPHY AND LOW-ANGLE LASER-LIGHT SCATTERING - APPLICATION TO THE STUDY OF LONG CHAIN-BRANCHED POLYETHYLENE [J].

AXELSON, DE ;

KNAPP, WC .

JOURNAL OF APPLIED POLYMER SCIENCE, 1980, 25 (01) :119-123

[3] Amylopectin aggregation as a function of starch phosphate content studied by size exclusion chromatography and on-line refractive index and light scattering [J].

Blennow, A ;

Bay-Smidt, AM ;

Bauer, R .

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 2001, 28 (05) :409-420

[4]

Brandrup J., 1999, Polymer handbook, VII

[5] Chain transfer to polymer in free-radical bulk and emulsion polymerization of vinyl acetate studied by NMR spectroscopy [J].

Britton, D ;

Heatley, F ;

Lovell, PA .

MACROMOLECULES, 1998, 31 (09) :2828-2837

[6]

GOLDWASSER JM, 1993, ACS SYM SER, V521, P243

[7] STUDIES OF BRANCHING IN POLYVINYL ACETATE [J].

GRAESSLEY, WW ;

HARTUNG, RD ;

UY, CW .

JOURNAL OF POLYMER SCIENCE PART A-2-POLYMER PHYSICS, 1969, 7 (11PA) :1919-+

[8]

HU GX, 1991, POLYM TEST, V10, P91

[9] Modeling molecular weight and degree of branching distribution of low-density polyethylene [J].

Iedema, PD ;

Wulkow, M ;

Hoefsloot, HCJ .

MACROMOLECULES, 2000, 33 (19) :7173-7184

[10] Rapid size distribution and purity analysis of gastric mucus glycoproteins by size exclusion chromatography multi-angle laser light scattering [J].

Jumel, K ;

Fiebrig, I ;

Harding, SE .

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 1996, 18 (1-2) :133-139

← 1 2 3 4 →