Compounding fumed silicas into polydimethylsiloxane: Bound rubber and final aggregate size

被引：83

作者：

Aranguren, MI ^{[1
]}

Mora, E ^{[1
]}

Macosko, CW ^{[1
]}

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1997年 / 195卷 / 02期

关键词：

silica-PDMS suspensions; compounding; bound rubber; aggregation;

D O I：

10.1006/jcis.1997.5143

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The properties of mechanically mixed suspensions of fumed silicas in polydimethylsiloxane (PDMS) were studied. The work focuses on two aspects: (i) Adsorption of PDMS onto silicas by means of the mechanical mixing of the bulk polymer and untreated or chemically modified fumed silicas. The silica-PDMS suspensions were completely dispersed or only swollen by a solvent, depending on the filler concentration, the silica surface chemistry, and the polymer molecular weight. The bound rubber content of the different preparations was determined by a weight difference technique and by carbon analysis of the samples and was compared with previously reported values in similar systems. (ii) The effect of the mechanical mixing on the final aggregate size of the silica and on the polymer molecular weight distribution. One PDMS and silicas of different surface area and surface chemistry were used. The final size of the aggregates after a long mixing time with the bulk polymer was approximately the same in all cases. (C) 1997 Academic Press.

引用

页码：329 / 337

页数：9

共 26 条

[11] POLYMERS AT AN INTERFACE - A SIMPLIFIED VIEW
DEGENNES, PG
[J]. ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1987, 27 (3-4) : 189 - 209
[12] Flory P J., PRINCIPLES POLYM CHE
[13] ILER RK, 1955, COLLOID CHEM SILICAS, P700
[14] ILER RK, 1955, COLLOID CHEM SILICAS, P473
[15] DISPERSIVE MIXING IN INTERNAL MIXERS - A THEORETICAL-MODEL BASED ON AGGLOMERATE RUPTURE
MANAS-ZLOCZOWER, I
NIR, A
TADMOR, Z
[J]. RUBBER CHEMISTRY AND TECHNOLOGY, 1982, 55 (05): : 1250 - 1285
[16] Medalia A. I., 1972, Rubber Chem. Technol, V45, P1171, DOI [DOI 10.5254/1.3544731, 10.5254/1.3544731]
[17] Medalia AI., 1974, RUBBER CHEM TECHNOL, V47, P411, DOI DOI 10.5254/1.3540450
[18] THEORY OF BOUND RUBBER
MEISSNER, B
[J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1974, 18 (08) : 2483 - 2491
[19] MERCER HN, 1976, RUBBER CHEM TECHNOL, V49, P1069
[20] Polmanteer K.E., 1975, RUBBER CHEM TECHNOL, V48, P795

← 1 2 3 →