Synthesis of poly(vinyl acetate)-graft-polystyrene and its compatibilizing effect on PS/PVAc blends

Park, Eun-Soo; Lee, Ho-Kyoung; Choi, Heeseon; Lee, Dong-Choo; Chin, In‐Joo; Lee, Kwang-Hee; Kim, Chulhee; Yoon, Jin‐San

doi:10.1016/s0014-3057(00)00120-8

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…But in the blends films we observe several very small domains of PLA dispersed phase in PVAc matrix distributed in the homogeneous pattern indicating miscible blends formed. The formation of these homogeneous small domains in PVAc matrix indicates strong interfacial interaction force between PVAc and PLA layer leading to no phase separation and hence miscible blends was formed [2,[12][13][14].…”

Section: Resultsmentioning

confidence: 99%

Thermal, Morphological and Biodegradable Properties of PVAc/PLA Bioblends

Singh¹,

Anthony²,

Chowdhury³

2018

Asian J. Chem.

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Polymer blending is one of most attractive and convenient method to develop new polymeric material with effective desired properties at low cost [1-4]. The property of blends depends on proper miscibility of the polymers. The miscibility of polymers depends on the specific interaction between the polymer constituent [5]. The completely miscible polymers have better properties as compared their constituent polymers. Polyvinyl acetate (PVAc) is an atactic, branched thermoplastic, formed by polymerization of vinyl acetate monomers. It is semicrystalline, partially hydrophilic copolymer of vinyl alcohol and vinyl acetate. The glass transition temperature (T g) of PVAc is very low at room temperature and shows good resistance to oxidation and UV-radiation. It is sticky above T g and brittle below it. It has good adhesion, high tensile straight and hardness and brittleness varies with the molecular weight [6]. It is used mainly in paint industry [7,8] and also used in medical field for drug delivery [9]. In this work we prepared the PVAc/ PLA blends by solution casting methods. The thermal stability of blends film was characterized by TGA, morphology of blends film was analyzed by SEM and biodegradability observed by soil burial methods. EXPERIMENTAL Polylactic acid (PLA) was prepared in lab. p-Xylene, tetrahydofurane (THF), polyvinyl acetate (PVAc) i.e., methanol

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Section: Resultsmentioning

confidence: 99%

Thermal, Morphological and Biodegradable Properties of PVAc/PLA Bioblends

Singh¹,

Anthony²,

Chowdhury³

2018

Asian J. Chem.

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“…It is demonstrated that graft copolymer as compatibilizer can localize at the interface between immiscible homopolymers, acting as a surfactant, reduce the interfacial tension and disperse the incompatible polymers into smaller domains effectively [12][13][14][15][16][17][18][19][20][21][22][23]. Oommen et al studied the morphology and properties of heterogeneous poly(methyl methacrylate)/ natural rubber blends by the addition of a graft copolymer of natural rubber and poly(methyl methacrylate) (NR-g-PMMA).…”

Section: Introductionmentioning

confidence: 99%

External potential dynamics simulation of the compatibility of T-shaped graft copolymer compatibilizing two immiscible homopolymers

Li¹,

Jiang²

2010

E-Polymers

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Abstract:The compatibilizing effect of T-shaped graft copolymers between two incompatible homopolymers A and B was studied by using the external potential dynamics (EPD) method based on dynamic self-consistent field theory. We specifically focus on the role of the concentration and the junction position of the graft copolymer on the compatibility. The blend containing compatibilizers exhibits slow dynamics during the phase separation. We observed that the compatiblizers are particularly efficient when the graft point is close to the free end of the backbone chain.

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Grafted syndiotactic polystyrene synthesized via melting graft copolymerization used as a compatibilizer for immiscible syndiotactic polystyrene/polyadimide 66 blends

Cao

Shen²,

Lin³

2005

J of Applied Polymer Sci

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ABSTRACT:A new grafted syndiotactic polystyrene (gsPS), to be used as a compatibilizer for syndiotactic polystyrene (sPS)/polyadimide 66 blends, was prepared by the melting graft copolymerization of sPS and monomers composed of itaconic acid and dibutyl maleate with dicumyl peroxide as an initiator. The resulting g-sPS possessed a side-chain structure identified by IR spectra, and the results of mechanical testing show that a good impact strength and tensile strength were obtained for g-sPS at a 7.16-phr addition of monomer with a 3:1 proportion of dibutyl maleate and itaconic acid. Differential scanning calorimetry and scanning electron microscopy analysis indicated that the g-sPS maintained a high glass-transition temperature and a crystalline structure.

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Synthesis of poly(vinyl acetate)-graft-polystyrene and its compatibilizing effect on PS/PVAc blends

Cited by 7 publications

References 10 publications

Thermal, Morphological and Biodegradable Properties of PVAc/PLA Bioblends

Thermal, Morphological and Biodegradable Properties of PVAc/PLA Bioblends

External potential dynamics simulation of the compatibility of T-shaped graft copolymer compatibilizing two immiscible homopolymers

Grafted syndiotactic polystyrene synthesized via melting graft copolymerization used as a compatibilizer for immiscible syndiotactic polystyrene/polyadimide 66 blends

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