不同温度下玉米淀粉颗粒结构的变化

淀粉是绿色植物通过光合作用产生的有机物质，可用于长期储能。 淀粉的结构比传统聚合物的结构复杂得多。 目前，关于淀粉微观结构的研究较少。 淀粉基聚合物的加工涉及多种化学和物理反应，包括水扩散、糊化、熔化和结晶。 一种重要的加工方法是淀粉的糊化。

Starch is an organic substance produced by green plants through photosynthesis, which can be used for long-term energy storage. The structure of starch is much more complex than that of traditional polymers. At present, there are few studies on the microstructure of starch. The processing of starch based polymers involves a variety of chemical and physical reactions, including water diffusion, gelatinization, melting and crystallization. An important processing method is gelatinization of starch.

随着温度升高，玉米淀粉颗粒膨胀直爆裂。 这种现象也发生在玉米淀粉的结晶区，随着温度的升高，结晶区逐渐减小并消失。 热台显微镜实验证实了这一观察结果。

With the increase of temperature, corn starch granules expanded until bursting. This phenomenon also occurs in the crystallization zone of corn starch. With the increase of temperature, the crystallization zone gradually decreases and disappears. This observation was confirmed by the hot table microscope experiment.

用激光共聚焦显微镜（CLSM）观察玉米淀粉的生长年轮发现，随着温度的升高，玉米淀粉的生长年轮逐渐从断裂，向全粒扩散。  GPC 测试有助于确定不同温度下玉米淀粉的分子量。 随着温度的升高，玉米淀粉的广度指数分布逐渐增大，直链淀粉和支链淀粉处于破碎状态。

Using laser confocal microscope (CLSM) to observe the growth rings of corn starch, it was found that with the increase of temperature, the growth rings of corn starch gradually broke from the center to the whole grain. GPC test is helpful to determine the molecular weight of corn starch at different temperatures. With the increase of temperature, the breadth index distribution of corn starch gradually increased, and amylose and amylopectin were in a broken state.

与传统塑料制品相比，玉米淀粉粒状材料及制品的优势在于：

Compared with traditional plastic products, corn starch granular materials and products have the following advantages:

性能相近：与同类传统塑料制品具有相同、相近的性能；

Similar performance: it has the same and similar performance with similar traditional plastic products;

环保：淀粉基生物基塑料及制品具有节约石油资源、减少二氧化碳排放的优势； 淀粉基生物降解塑料及制品具有完全可生物降解和可堆肥的优势，实现垃圾无害化处理的优势；

Environmental protection: starch based bio based plastics and products have the advantages of saving oil resources and reducing carbon dioxide emissions; Starch based biodegradable plastics and products have the advantages of complete biodegradation and composting, and realize the advantages of harmless waste treatment;

不含有害物质：淀粉基材料及制品不含增塑剂、双酚A、重金属等有毒有害物质；

No harmful substances: starch based materials and products do not contain plasticizers, bisphenol A, heavy metals and other toxic and harmful substances;

生产过程：生产过程中不排放三废，不会对环境造成新的污染；

Production process: no three wastes are discharged during the production process, which will not cause new pollution to the environment;

成本：淀粉基生物基塑料材料及制品与普通石油塑料制品相同，淀粉基全生物降解材料及制品成本约为普通石油塑料的两倍。

Cost: starch based bio based plastic materials and products are the same as ordinary petroleum plastic products, and the cost of starch based fully biodegradable materials and products is about twice that of ordinary petroleum plastics.

以上就是今天给大家介绍的问题及注意事项的全部内容。 我希望它对你有帮助。 如果您想了解更多，可以电话联系我们或关注我们的网站https://www.qiluxinke.com，我们的工作人员会及时与您联系。

The above is all about the problems and precautions introduced to you today. I hope it helps you. If you want to know more, you can contact us by phone or follow our website https://www.qiluxinke.com , our staff will contact you in time.