CAJ | 학술논문

利用碱性复合溶剂在低温条件下碱解玉米淀粉制备纳米材料，并利用红外光谱（IR）、固体13C CP‐MAS核磁（NMR）、X射线粉末衍射（XRD）和动态光散射等分析手段对所得纳米颗粒进行了表征．实验结果表明，用预冷到－8～－10℃的6％ NaO H／4％尿素／水溶液处理淀粉，所得淀粉纳米颗粒（N‐S t ）较其他方法制得的纳米颗粒尺寸变小，粒径约为30～100 nm ，虽然淀粉的结晶形态发生改变，但化学结构不变．采用碱解法制备N‐St ，其优点是N‐St颗粒的粒度分布较窄、尺寸小、比表面积大，具有生物相容性、无毒无公害等特点，另外，在后处理时尿素可以被完全除掉．N‐St在载药和缓释给药、制备污水处理剂、制备重金属离子吸附剂等方面具有广泛的应用前景．
이용감성복합용제재저온조건하감해옥미정분제비납미재료，병이용홍외광보（IR）、고체13C CP‐MAS핵자（NMR）、X사선분말연사（XRD）화동태광산사등분석수단대소득납미과립진행료표정．실험결과표명，용예랭도－8～－10℃적6％ NaO H／4％뇨소／수용액처리정분，소득정분납미과립（N‐S t ）교기타방법제득적납미과립척촌변소，립경약위30～100 nm ，수연정분적결정형태발생개변，단화학결구불변．채용감해법제비N‐St ，기우점시N‐St과립적립도분포교착、척촌소、비표면적대，구유생물상용성、무독무공해등특점，령외，재후처리시뇨소가이피완전제도．N‐St재재약화완석급약、제비오수처리제、제비중금속리자흡부제등방면구유엄범적응용전경．
The nanoparticles of starch(N‐St) were obtained by adding starch into the aqueous solution containing 6% NaOH/4% urea which was pre‐cooled to below -8 ℃ ,and were characterized by the infrared spectroscopy(IR) ,the solid magnetic resonance spectroscopy(13 C CP/MAS NMR)、the X ray diffraction(XRD) and dynamic light scattering (DLS) methods .The results showed that the chemical structure of N‐St did not change ,but the size of N‐St became much smaller ,only 30 ~100 nm by the alkaline hydrolysis of corn starch at low temperatures .Its advantage is that N‐St par‐ticle size distribution is relatively narrow ,small size ,large specific surface area .It has many charac‐teristics ,such as biocompatibility ,non‐toxic pollution‐free .In addition ,in the post‐processing of u‐rea ,it can be completely removed .N‐St in drug sustained‐release dosage ,preparation and sewage treatment agent ,heavy metal ion adsorbent preparation has wide prospect in application .