CAJ | 학술논문

为考察疏水性淀粉基食品包装材料与食品模拟体系接触过程中的结构变化，采用扫描电子显微镜、傅里叶红外光谱和小角/广角X射线散射系统分析了淀粉基膜材的显微结构、链结构、分子间相互作用、结晶结构和微区结构。结果表明：在与食品模拟体系的接触过程中，随着模拟体系溶剂的渗透和增塑剂的迁移，淀粉基膜材中大分子链收缩聚拢，微晶结构聚集，晶面距减小，形成更致密的聚集态结构，增塑剂分子受到的作用力增大；淀粉醋酸酯大分子的运动性、溶剂渗透和增塑剂迁移受到更大的内阻力。
위고찰소수성정분기식품포장재료여식품모의체계접촉과정중적결구변화，채용소묘전자현미경、부리협홍외광보화소각/엄각X사선산사계통분석료정분기막재적현미결구、련결구、분자간상호작용、결정결구화미구결구。결과표명：재여식품모의체계적접촉과정중，수착모의체계용제적삼투화증소제적천이，정분기막재중대분자련수축취롱，미정결구취집，정면거감소，형성경치밀적취집태결구，증소제분자수도적작용력증대；정분작산지대분자적운동성、용제삼투화증소제천이수도경대적내조력。
In order to reveal the structural changes of hydrophobic starch-based film for food packaging during the contact with food simulants,the microstructure,chain structure,intermolecular interaction,crystalline structure and micro-regional structure of the film were systematically analyzed by means of scanning electron microscopy, Fourier-transform infrared spectroscopy,as well as small and wide angle X-ray scattering technique. The results in-dicate that,along with the solvent permeation and the plasticizer migration occurring during the contact with food simulants,the macromolecular interaction of the film is enhanced;the microcrystallines aggregate;and the inter-planar spacing decreases,thus forming more compact aggregation structure and enhancing the molecular force exer-ted on the plasticizer. Moreover,it is found that the mobility of starch acetate macromolecules,the solvent permea-tion and the plasticizer migration are all retarded during the contact with food simulants.