Synthesis and mechanical properties of high impact polystyrene with <i>in situ</i> bulk polymerization toughened by one‐pot Nd‐based styrene–isoprene–butadiene terpolymer rubber

Li, Tingting; Li, Li; Xu, Qingyu; Wang, Yurong; Li, Yang

doi:10.1002/app.43979

Cited by 2 publications

(1 citation statement)

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“…In HIPS-type materials the morphology of the rubber phase is strongly influenced by the reaction conditions such as stirring speed (Cunha et al 2013), initiator (Cunha et al 2013;Laganá et al 2019, Berkenwald et al 2018Chang et al 2012), chain transfer agent (Díaz de León et al 2010), among others, but principally by the nature of the rubber used (Morales et al 2006;Sardelis et al 1987;Wang et al 2019;Li et al 2016;Nazari et al 2018;Hanifpour and Bahri-Laleh 2019). In this context, the influence of the morphology on the mechanical and optical properties of HIPS has been extensively reported in the literature (Aggarwal and Livigni 1977;Anzaldi et al 1994;Katime et al 1995;Wagner and Robeson 1970;Baer 1972;Cigna et al 1976;Silberberg and Han 1978).…”

Section: Introductionmentioning

confidence: 99%

Synthesis strategies in the preparation of high impact polystyrene with different type of particles as the dispersed phase, towards a balance between impact strength and gloss

Enríquez-Medrano¹,

Acuña²,

Morales³

2020

Braz. J. Chem. Eng.

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Three different synthesis strategies based on the in situ pre-polymerization process were employed in order to obtain High Impact Polystyrene (HIPS) with different type (morphology and size) of particles as the dispersed phase, achieved by the use of two styrene-butadiene rubbers (SBR) in the initial recipes. The rubbers used were tapered polystyrene/polybutadiene copolymers with a polystyrene/polybutadiene composition of 10/90 and 40/60 wt%. Results were discussed in terms of physical-chemical, morphological, mechanical and optical parameters. A combination of two or three types of particle morphologies, i.e. salami, core-shell and droplets in the same sample were evidenced by Transmission Electron Microscopy analysis, independently of the strategy employed. The grafting degree, volume fraction of the dispersed phase and impact strength were positively affected by the increase of the amount of 10/90 SBR in the recipe. Several HIPS samples showed a good balance between impact strength and gloss, particularly those obtained from the strategy herein named as melt blending.

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