Enhancement in Compressive Strength and UV Ageing-resistance of Poly( p-phenylene benzobisoxazole) Nanocomposite Fiber Containing Modified Polyhedral Oligomeric Silsesquioxane
- Authors
- Jang, Yong Won; Min, Byung Gil; Yoon, Kwan Han
- Issue Date
- Mar-2017
- Publisher
- KOREAN FIBER SOC
- Keywords
- Nanocomposite; Fibers; Environmental degradation; Mechanical properties
- Citation
- FIBERS AND POLYMERS, v.18, no.3, pp.575 - 581
- Journal Title
- FIBERS AND POLYMERS
- Volume
- 18
- Number
- 3
- Start Page
- 575
- End Page
- 581
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/19143
- DOI
- 10.1007/s12221-017-1080-2
- ISSN
- 1229-9197
- Abstract
- Modified polyhedral oligomeric silsesquioxane (m-POSS) from trisilanol isobutyl POSS and 4-formylbenzoic acid was synthesized and used for polymerization of poly(p-phenylene benzobisoxazole) (PBO) nanocomposite. PBO and its nanocomposite fibers could be obtained by dry-jet wet spinning the as-polymerized solutions at a liquid crystalline state. No decrease in tensile strength of PBO/m-POSS nanocomposite fibers was observed with the m-POSS content. The tensile modulus of PBO nanocomposite fibers showed the increase 38 % at 2 % loading of POSS and 16 % at 2 % loading of m-POSS compared to PBO fiber. Incorporation of m-POSS into PBO brought to the increase of 19-54 % in compressive strength compared to PBO fiber. The retention of tensile strength was improved from 48 % for PBO to 59 % for PBO/POSS-2.0 mol% fiber and to 62 % for PBO/m-POSS-2.0 mol% fiber after 16 h UV irradiation.
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