期刊
MATERIALS
卷 13, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/ma13010062
关键词
microcrystalline cellulose (MCC); composites; unsaturated polyester resins; thermogravimetric analysis (TG); mechanical analysis; dynamic mechanical analysis (DMA)
The paper investigates the properties of unsaturated polyester resins and microcrystalline cellulose (MCC) composites. The influence of MCC modification on mechanical, thermomechanical, and thermal properties of obtained materials was discussed. In order to reduce the hydrophilic character of the MCC surface, it was subjected to esterification with the methacrylic anhydride. This resulted in hydroxyl groups blocking and, additionally, the introduction of unsaturated bonds into its structure, which could participate in copolymerization with the curing resin. Composites of varying amounts of cellulose as a filler were obtained from modified MCC and unmodified (comparative) MCC. The modification of MCC resulted in obtaining composites characterized by greater flexural strength and strain at break compared with the analogous composites based on the unmodified MCC.
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