Enhanced mechanical properties of acrylate based shape memory polymer using grafted hydroxyapatite
Autor: | S.T. Aruna, S. Raja, G. Jerald Maria Antony |
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Rok vydání: | 2018 |
Předmět: |
chemistry.chemical_classification
Acrylate Materials science Polymers and Plastics Organic Chemistry Composite number 02 engineering and technology Polyethylene glycol Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Grafting 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Monomer stomatognathic system chemistry Chemical engineering Ultimate tensile strength Materials Chemistry 0210 nano-technology Glass transition |
Zdroj: | Journal of Polymer Research. 25 |
ISSN: | 1572-8935 1022-9760 |
Popis: | In the present study, the effect of grafted and ungrafted hydroxyapatite (HAp) filler on the mechanical properties of acrylate based shape memory polymer (SMP) composite is reported. HAp is grafted with polyethylene glycol methacrylate (PEGMA) monomer to avoid agglomeration and the same is embedded as reinforcement in tBA – PEGDMA matrix (70 wt% tBA: tert-butyl acrylate +30 wt% PEGDMA: polyethylene glycol dimethacrylate). The grafting process improved the interfacial interactions of the particles, dispersed in the polymer system and subsequently enhanced the mechanical properties of the shape memory polymer composites. The morphology of HAp particles is investigated by field emission scanning electron microscopy. The mechanical properties of SMP composites are evaluated at room temperature and above glass transition temperature (Tg) with grafted and ungrafted HAp particles. The addition of grafted HAp significantly improved the tensile strength (40%) and shape recovery rate (25%) of the SMP composite when compared to the SMP composite containing ungrafted HAp. SMP composite containing grafted HAp exhibited higher cell viability compared to the neat SMP and the SMP composite containing ungrafted HAp. |
Databáze: | OpenAIRE |
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