仿生工程学报 ›› 2017, Vol. 14 ›› Issue (4): 781-790.doi: 10.1016/S1672-6529(16)60443-2

• 论文 • 上一篇    下一篇

Wood Plastic Composites Prepared from Biodegradable Poly(butylene succinate) and Burma Padauk Sawdust (Pterocarpus macrocarpus): Water Absorption Kinetics and Sunlight Exposure Investigations

Nawadon Petchwattana1, Jakkid Sanetuntikul2, Paranee Sriromreun3, Borwon Narupai4   

  1. 1. Division of Polymer Materials Technology, Faculty of Agricultural Product Innovation and Technology, Srinakharinwirot University, Ongkharak, Nakhon Nayok 26120, Thailand
    2. Faculty of Engineering and Technology, King Mongkut's University of Technology North Bangkok, Bankhai, Rayong 21120, Thailand
    3. Department of Chemical Engineering, Faculty of Engineering, Srinakharinwirot University, Ongkharak,
    Nakhon Nayok 26120, Thailand
    4. Expert Centre of Innovative Materials, Thailand Institute of Scientific and Technological Research, Pathum Thani 12120, Thailand
  • 收稿日期:2016-06-10 修回日期:2017-08-29 出版日期:2017-10-10 发布日期:2017-10-10
  • 通讯作者: Nawadon Petchwattana E-mail:nawadon@g.swu.ac.th
  • 作者简介:Nawadon Petchwattana1, Jakkid Sanetuntikul2, Paranee Sriromreun3, Borwon Narupai4

Wood Plastic Composites Prepared from Biodegradable Poly(butylene succinate) and Burma Padauk Sawdust (Pterocarpus macrocarpus): Water Absorption Kinetics and Sunlight Exposure Investigations

Nawadon Petchwattana1, Jakkid Sanetuntikul2, Paranee Sriromreun3, Borwon Narupai4   

  1. 1. Division of Polymer Materials Technology, Faculty of Agricultural Product Innovation and Technology, Srinakharinwirot University, Ongkharak, Nakhon Nayok 26120, Thailand
    2. Faculty of Engineering and Technology, King Mongkut's University of Technology North Bangkok, Bankhai, Rayong 21120, Thailand
    3. Department of Chemical Engineering, Faculty of Engineering, Srinakharinwirot University, Ongkharak,
    Nakhon Nayok 26120, Thailand
    4. Expert Centre of Innovative Materials, Thailand Institute of Scientific and Technological Research, Pathum Thani 12120, Thailand
  • Received:2016-06-10 Revised:2017-08-29 Online:2017-10-10 Published:2017-10-10
  • Contact: Nawadon Petchwattana E-mail:nawadon@g.swu.ac.th
  • About author:Nawadon Petchwattana1, Jakkid Sanetuntikul2, Paranee Sriromreun3, Borwon Narupai4

摘要: Wood plastic biocomposites of biodegradable poly(butylene succinate) (PBS) and Padauk sawdust was successfully pre-pared by using a twin screw extruder and an injection molding machine. The effects of water absorption and sunlight exposure on some properties of the composites were investigated. Water absorption of PBS composites was found to follow the Fick’s law of diffusion, while the diffusion coefficient increased with increasing wood content. Maximum water absorption of around 4.5% was observed at 30 wt.% sawdust. Optical micrograph indicated the swelling of wood particles by around 1% – 3% after 30 days of water immersion. The tensile and flexural strengths reduced slightly both under the water immersion and sunlight exposure. After 90 days of exposure, the composites clearly looked paler than the non-weathered ones. Thermal scan indicated the re-duction of crystalline region due to the plasticization effect derived from water molecules.

关键词: wood plastic composites, Fickian diffusion, mechanical properties, biodegradable polymers, environmental deg-radation

Abstract: Wood plastic biocomposites of biodegradable poly(butylene succinate) (PBS) and Padauk sawdust was successfully pre-pared by using a twin screw extruder and an injection molding machine. The effects of water absorption and sunlight exposure on some properties of the composites were investigated. Water absorption of PBS composites was found to follow the Fick’s law of diffusion, while the diffusion coefficient increased with increasing wood content. Maximum water absorption of around 4.5% was observed at 30 wt.% sawdust. Optical micrograph indicated the swelling of wood particles by around 1% – 3% after 30 days of water immersion. The tensile and flexural strengths reduced slightly both under the water immersion and sunlight exposure. After 90 days of exposure, the composites clearly looked paler than the non-weathered ones. Thermal scan indicated the re-duction of crystalline region due to the plasticization effect derived from water molecules.

Key words: wood plastic composites, Fickian diffusion, mechanical properties, biodegradable polymers, environmental deg-radation