CAJ | 학술논문

本文详细研究了可完全生物降解的聚β-羟基丁酸酯(PHB)与水溶性聚氧化乙烯(PEO)两元共混体系的拉伸力学性能.讨论了PEO分子量、共混组成及热处理条件对共混体系力学性能的影响.其中，PHB与超高分子量PEO(重均分子量5×106)共混，两组分力学上具有相容性，共混物的拉伸强度、断裂伸长率及模量都有明显的正的协同效应.共混改性效果显著PHB的力学性能得到很大改善，尤其PHB的脆性缺陷.并且，共混物在经过适当温度退火处理之后，共混物性能还可进一步改善.
본문상세연구료가완전생물강해적취β-간기정산지(PHB)여수용성취양화을희(PEO)량원공혼체계적랍신역학성능.토론료PEO분자량、공혼조성급열처리조건대공혼체계역학성능적영향.기중，PHB여초고분자량PEO(중균분자량5×106)공혼，량조분역학상구유상용성，공혼물적랍신강도、단렬신장솔급모량도유명현적정적협동효응.공혼개성효과현저PHB적역학성능득도흔대개선，우기PHB적취성결함.병차，공혼물재경과괄당온도퇴화처리지후，공혼물성능환가진일보개선.
Tensile properties of poly(β-hydroxybutyrate)/poly(ethylene oxide)(PHB/PEO) blends were reported in this paper.It was found that the blends of PHB with different molecular-weight PEO exhibited different mechanical properties.The mechanical properties of the blends of PHB and PEO3(M-w=0^3×10+6) were very poor.However,the blends of PHB and PEO5(M-w=5×10+6) showed compatible in mechanical properties.Excellent synergism was observed not only in tensile stress and tensile elongation but also in modulus.Moreover,the ductility of the blends could be improved further under proper heat-treatment.