CAJ | 학술논문

本文以0～60 kGy 60 Co γ射线辐照的明胶为对象，研究了辐照剂量与明胶的黏度、胶凝特性、力学性能、蛋白组分、分子质量的关系。结果表明：明胶的特性黏度、相对黏度、凝胶强度、断裂伸长率、分子质量与剂量呈良好的负相关；明胶的γ、β、α链含量随剂量的增加而减少，大分子链的降解伴随着小分子多肽链混合物的增加，相对分子质量分布逐渐加宽；明胶膜的断裂强度升高而断裂伸长率下降；辐照后明胶表面结构致密而平滑。在有限水和无限氧气存在条件下，辐照明胶以降解为主，同时伴随着少量的交联，剂量越大，反应程度越高。
본문이0～60 kGy 60 Co γ사선복조적명효위대상，연구료복조제량여명효적점도、효응특성、역학성능、단백조분、분자질량적관계。결과표명：명효적특성점도、상대점도、응효강도、단렬신장솔、분자질량여제량정량호적부상관；명효적γ、β、α련함량수제량적증가이감소，대분자련적강해반수착소분자다태련혼합물적증가，상대분자질량분포축점가관；명효막적단렬강도승고이단렬신장솔하강；복조후명효표면결구치밀이평활。재유한수화무한양기존재조건하，복조명효이강해위주，동시반수착소량적교련，제량월대，반응정도월고。
The gelatin was irradiated for 0-60 kGy dosages by 60Co γ-ray . The relationship of dosage and properties including viscosity , gel strength , mechanical property ,molecular weight and protein component was discussed . The results show that there is a negative correlation between the dosage and intrinsic viscosity ,relative viscosity ,gel strength and molecular weight .With the increase of irradiation dosage , the γ,β,αchain content of gelatin decreases but the small molecules content increases , and relative molecular weight distribution changes wider .The elongation decreases but tensile strength of gelatin film increases . Compared with no irradiation one , the irradiation gelatin has more compact and smooth surface texture .It is assumed that when the limited water and oxygen exist during the irradiation process ,cross-linking and degradation of gelatin molecular produce simultaneously and the main reaction is cross-linking .The reaction degree increases with the dosage .