Modeling for morphology development during single-screw extrusion of LDPE/PS blend

被引：23
|
作者：
Wilczynski, K [1 ]
Tyszkiewicz, A [1 ]
Szymaniak, Z [1 ]
机构：
[1] Warsaw Univ Technol, PL-02524 Warsaw, Poland
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2001年 / 109卷 / 03期
关键词：
single-screw extruder; LDPE/PS blend; fibrillation/disintegration mechanism;
D O I：
10.1016/S0924-0136(00)00820-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A computer model for a single-screw plasticating extrusion SSEM (developed by Wilczynski [Teoria Wytlaczania Jednoslimakowego, Warsaw University of Technology Publication, Warsaw, 1990; Polym. Plast. Technol. Eng. 35 (1996) 449]) has been modified to model polyblend extrusion. The model has been applied for description of the nascent morphology of an immiscible binary polyblend of low-density polyethylene and polystyrene (LDPE/PS) compounded in the single-screw extruder. It was observed that the fibrillation/disintegration breakup mechanism prevails in the (conventional) single-screw extruder, and the filaments break when their diameter falls below the critical value (D < D-f) rather than the reduced capillary number decreases below four, k* < 4. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：320 / 323
页数：4
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