Title: EFFECT OF INTERFACIAL MODIFICATION ON THE RHEOLOGICAL PROPERTIES AND NUCLEATION BEHAVIOUR OF PP-BaSO”4 COMPOSITES
Page Range: p.473-481
Author(s): Ke Wang; Jingshen Wu; Hanmin Zeng
File size: 295K
Download the pdf (subscribers only)
Buy the pdf (non-subscribers)
Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 14
Issue No: No. 5
Abstract
The effect of surface treatment of barium sulphate filler particles on the rheological behaviour of PP composites was studied. The polypropylene-barium sulphate composites were prepared by pretreating the filler with stearic acid, silane and polypropylene-g-maleic anhydride, respectively. The effects of the PP-barium sulphate interfacial interaction on the rheological properties and nucleation behaviour of the composites were studied. It was shown that once the polymer-filler interfacial interaction had been enhanced by reactive coupling agents, the fillers acted as temporary physical crosslinking points, effectively restricting the motion of polymer chains neighbouring the filler particles. As a result, the tendency of the polymer chains to undergo intermolecular slippage was reduced, and the melt viscosity was enhanced. However, when the filler surface was modified with non-reactive coupling agents such as stearic acid, the reduced particle-particle interaction and lubricating effect of the stearic acid decreased viscosity. With the modification of the interface, the barium sulphate dispersion in PP was improved and the thermodynamic potential barrier for the formation of primary nuclei was reduced by the adsorption mechanism. 16 refs.
Related reading
More journal reading and science coverage connected to this topic.
Combined temperature and moisture effect on the monotonic and fatigue strengths of sandwich beams with glass-polypropylene faces and aluminum foam cores
Title: Combined temperature and moisture effect on the monotonic and fatigue strengths of sandwich beams with glass-polypropylene faces and aluminum foam cores Page Range:…
Nonlinear dynamic characteristics of PZT/polymer gripper
Title: Nonlinear dynamic characteristics of PZT/polymer gripper Page Range: p.79-84 Author(s): Jia Xu; Yi-Ran Li; Hai-Bo Wang; Zhi-Wen Zhu File size: Download the pdf…
Enhancement mechanism for carbohydrate polymer green lubricant
Title: Enhancement mechanism for carbohydrate polymer green lubricant Page Range: p.85-90 Author(s): Shih-Chen Shi; Jhen-Yu Wu File size: Download the pdf (subscribers only) Buy…