CAJ | 학술논문

利用复合增塑剂（甘油、乙二醇按比例组成）对天然糯米淀粉进行改性，并在高剪切作用下制得热塑性糯米淀粉基料（ TPS）；以松香为原料，以甘油作改性剂对松香进行酯化改性，得到松香甘油酯作增粘树脂，将制得热塑性糯米淀粉基料与松香甘油酯在一定温度下熔炼共混，并配以合适的助剂，制得松香／淀粉基可生物降解热熔胶。当松香树脂与热塑性糯米淀粉的质量配比为45／55时，所制备的热熔胶新品熔融粘度为5．1 Pa? s，软化点为92℃，抗拉强度为4．5 MPa，断裂伸长率为215％，月降解率为26．8％，且热稳定性较好，能达到普通市售热熔胶的技术标准要求。
이용복합증소제（감유、을이순안비례조성）대천연나미정분진행개성，병재고전절작용하제득열소성나미정분기료（ TPS）；이송향위원료，이감유작개성제대송향진행지화개성，득도송향감유지작증점수지，장제득열소성나미정분기료여송향감유지재일정온도하용련공혼，병배이합괄적조제，제득송향／정분기가생물강해열용효。당송향수지여열소성나미정분적질량배비위45／55시，소제비적열용효신품용융점도위5．1 Pa? s，연화점위92℃，항랍강도위4．5 MPa，단렬신장솔위215％，월강해솔위26．8％，차열은정성교호，능체도보통시수열용효적기술표준요구。
The composite plasticizer ( composition of glycerol and ethylene glycol according to their proportion) was applied in the modification of natural waxy rice starch, and the high shear conditions to prepare thermoplastic waxy rice starch ( TPS ) .Rosin, as the raw material, with glycerol as the modification agent, by esterification modification, produced the rosin glyceride which was roling as the tackifying rosin, melting blended with the prepared thermoplastic waxy rice starch base on a certain temperature, with the appropriate auxiliary agent, prepared the rosin/starch based biodegradable hot melt adhesive.When the mass ratio of rosin and thermoplastic waxy rice starch was 45/55 , the melt viscosity of the prepared hot melt adhesive products was 5.1 Pa? s, the softening point was 92℃, the tensile strength was 4.5 MPa, the elongation at break was 215%, the monthly degradation rate was 26.8%.With good thermal stability, the products could meet the technical standards requirements of the hot melt adhesive of common market.