Effect of nano‐SiO2 on granule characteristic and fusion process of Poly(vinyl chloride‐co‐vinyl acetate)/nano‐SiO2 composite resin. Issue 4 (27th May 2014)

• Record Type: Journal Article
• Authors: Miao, Hui; Lin, Shaoliang; Lin, Jiaping
• Is Part Of: Journal of vinyl & additive technology. Volume 20:Issue 4(2014:Dec.)
• Page Start: 230
• Page End: 236
• Publication Date: 2014-05-27
• Subjects: Vinyl polymers -- Periodicals; Plastics -- Additives -- Periodicals; 668.4236
• DOI: 10.1002/vnl.21362
• Languages: English
• ISSNs: 1083-5601

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Poly(vinyl chloride‐<italic>co</italic>‐vinyl acetate) (PVVA)/nano‐SiO<sub>2</sub> composite resin was prepared by radical suspension polymerization of the monomers in the presence of fumed nano‐SiO<sub>2</sub> particles premodified with γ‐methylacryloxypropyl trimethoxysilane. The cool dioctyl phthalate absorption percentage, granule porosity, and specific surface area of the composite resin were enhanced through incorporation of nano‐SiO<sub>2</sub> into the PVVA. Scanning electron microscope pictures showed the resin had higher porosity. PVVA/nano‐SiO<sub>2</sub> composite resin was mixed with pure PVC resin to form a mixture sample (polymer‐composite blend [PCB]) and the mixture was fused in the torque rheometer. The rheological test results indicated that, at a certain nano‐SiO<sub>2</sub> content, the fusion speed of PCB was accelerated and the fusion temperature of PCB was decreased, owing to nano‐SiO<sub>2</sub> dispersed evenly in the polymer matrix. When excessive nano‐SiO<sub>2</sub> was loaded, the fusion torque, the fusion time, and the fusion temperature of PCB were all increased. These properties are correlative to the dispersive density of nano‐SiO<sub>2</sub> in the polymer matrix. This study also demonstrated that the introduction of small amounts of nano‐SiO<sub>2</sub> into the resin increased the impact strength and tensile strength of PCB simultaneously. J. VINYL ADDIT. TECHNOL., 20:230–236, 2014. © 2014 Society of Plastics Engineers</p> </abstract>