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Flexural Properties of Glass Fibre Reinforced Composite with Partially Biodegradable Polymer Matrix
Author(s) -
Väkiparta Marju,
Vallittu Pekka K.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750712
Subject(s) - flexural strength , materials science , composite material , flexural modulus , composite number , polymer , dehydration , solubility , biopolymer , ultimate tensile strength , sorption , young's modulus , chemistry , biochemistry , organic chemistry , adsorption
Summary: The aim of this study was to evaluate flexural properties of a partially biodegradable glass fibre reinforced composite after water immersion and dehydration. In addition water sorption and solubility was determined. E‐glass fibres were preimpregnated with a biodegradable biopolymer of poly(hydroxyproline) amide (PA). The preimpregnated fibres were then further‐impregnated with Bis‐GMA–TEGDMA‐resin and light polymerized (n = 6). There was also specimen made of plain polymer and FRC without PA. After water immersion and/or dehydration, the specimens were tested by the three‐point bending test. The flexural strength and Young's modulus was increased in most cases after water immersion and dehydration except for PA containing specimens. The water sorption was <50 µg/mm 3 for all studied specimens and solubility was 20 µg/mm 3 for specimens without PA and 35 µg/mm 3 for specimens with PA.