| 两性淀粉的制备及表征 |
| |
| 引用本文： | 吕彤,戴晓红,韩薇,吴赞敏.两性淀粉的制备及表征[J].精细石油化工,2007,24(3):20-23. |
| |
| 作者姓名： | 吕彤 戴晓红 韩薇 吴赞敏 |
| |
| 作者单位： | 天津工业大学材料化工学院,天津,300160 |
| |
| 摘 要： | 以正磷酸盐为阴离子化剂,对高取代度的阳离子淀粉进行改性,制备阴阳离子比为0.5的两性淀粉,其最佳工艺为:磷酸盐与阳离子淀粉质量比为1.94～2.02.反应温度145～155℃,反应时间3～3.5 h。用红外光谱、X射线衍射、扫描电镜对其结构进行了表征,结果表明此种两性淀粉仅使淀粉结构中的非晶态区发生改变,并未改变整体结晶结构,因此其生物降解性会同天然高分子淀粉一样可完全降解。
|
| 关 键 词： | 两性淀粉 絮凝剂 阴离子取代度 |
| 收稿时间： | 2006-10-10 |
| 修稿时间： | 2006-10-102007-04-25 |
PREPARATION AND CHARACTERIZATION OF AMPHOTERIC STARCH |
| |
| Lü tong,Dai Xiaohong,Han Wei,Wu Zanmin.PREPARATION AND CHARACTERIZATION OF AMPHOTERIC STARCH[J].Speciality Petrochemicals,2007,24(3):20-23. |
| |
| Authors: | Lü tong Dai Xiaohong Han Wei Wu Zanmin |
| |
| Abstract: | The amphoteric starch(R=0.5)was synthesized by modifying cationic starch of high sub- stituting degree with phosphate as anionic reagent.The optimal conditions were found as follows: phosphate and cationic starch mass radio 1.94-2.02,reaction temperature 145-155℃,reaction time 3-3.5 h.The characterization results showed that only the amorphous portion of the starch was changed,while the whole crystal framework was not destroyed.Therefore,biological degradability should be the same as the nature starch. |
| |
| Keywords: | amphoteric starch flocculants anion substituting degree |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
