Deformation and toughening mechanism for high impact polystyrene (HIPS) by pressure-induced-flow processing
Abstract
In this paper, firstly, we systematically explain the deformation mechanism of the high impact polystyrene (HIPS) via pressure-induced-flow (PIF) processing. As indicated by TEM, AFM and SAXS, we find that a single salami domain is intensively deformed into a disk-like shape, and rubber-disk domains form parallel and oriented structure. In addition, chains in the interphase are oriented and become stiffer as suggested by FTIR and DMA. Such structural variation gives rise to the improvement in both strength and toughness. Impact and tensile strength for high impact polystyrene (HIPS) with parallel and oriented structure increase by 100% and 30% respectively. Moreover, we studied the toughening mechanism. The post-impact fracture surface transits from normal smooth fish scale like morphology to aligned grooves with high roughness, as demonstrated by SEM. The craze of impact fracture surface of HIPS samples after PIF processing is characterized by TEM. Finally, a model for the confinement of crazing is proposed.
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PIF processing has been demonstrated to enhance toughness and strength together in semi-crystalline and amorphous polymers such as PP and HIPS.
“Pressure-induced-flow (PIF) processing has been demonstrated to be an effective method to enhance together the toughness and strength of semi-crystalline and amorphous polymer, such as toughening of polypropylene (PP) [23] and high impact polystyrene (HIPS) [24].”
From Simultaneously Toughening and Strengthening of PLA-b-PCL Copolymer via Pressure-induced-flow Processing at Room Temperature (2018) · cites this paper as [24]
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References 39 · Cited by 30
- Authors
- Zhang, S., Zhu, S., Feng, X., Han, K., Huan, Q., Song, J., Ma, Y., & Yu, M.
- Affiliations
- Donghua University (CN)
- Corresponding author
- Ma, Yu
- Yu, Muhuo
- Venue
- RSC Advances
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 3
- Issue
- 19
- Pages
- 6879
- ISSN
- 2046-2069 (ISSN-L)
- OpenAlex
- W2007405444
- Cited by
- 30
- References
- 39
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 2 · 2022: 1 · 2021: 3 · 2019: 2 · 2018: 4 · 2017: 3 · 2016: 4 · 2015: 3 · 2014: 3 · 2013: 1
- FWCI
- 2.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- RSC Advances (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
- Physical Sciences › Engineering › Mechanical Engineering › Injection Molding Process and Properties
- Keywords
- high impact polystyrene, deformation mechanisms, toughening mechanisms, impact strength, tensile strength, fracture morphology, crazing
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