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反相悬浮法合成PNaAA高吸水性树脂的聚合工艺 被引量:7
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作者 陈雪萍 朱耕宇 +1 位作者 黄志明 翁志学 《化学反应工程与工艺》 CAS CSCD 北大核心 2003年第3期232-236,共5页
 采用反相悬浮法合成PNaAA高吸水性树脂。研究了聚合初始温度、搅拌转速、分散剂的种类及用量等对聚合稳定性、树脂粒径和吸水性能的影响。结果表明:在聚合初始温度为50℃、以Span-60为分散剂、分散剂用量为4.4%(相对于单体质量)及搅...  采用反相悬浮法合成PNaAA高吸水性树脂。研究了聚合初始温度、搅拌转速、分散剂的种类及用量等对聚合稳定性、树脂粒径和吸水性能的影响。结果表明:在聚合初始温度为50℃、以Span-60为分散剂、分散剂用量为4.4%(相对于单体质量)及搅拌转速为500r.min-1的条件下,聚合过程稳定性好,树脂粒径适中、饱和吸水率高、吸水速度快。 展开更多
关键词 反相悬浮法 合成 PNAAA 水性树脂 聚合工艺 聚丙烯酯钠 性能表征 吸水性
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Separation of aluminosilicates and diaspore from diasporic-bauxite by selective flocculation 被引量:2
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作者 黄传兵 张麟 +1 位作者 王毓华 兰叶 《Journal of Central South University of Technology》 EI 2008年第4期520-525,共6页
The flocculation tests of four pure minerals(diaspore,kaolinite,illite,pyrophyllite)and bauxite ore were investigated by the sedimentation.The dispersion behavior of the four pure minerals shows a very good consistenc... The flocculation tests of four pure minerals(diaspore,kaolinite,illite,pyrophyllite)and bauxite ore were investigated by the sedimentation.The dispersion behavior of the four pure minerals shows a very good consistency with the variation of zeta potential.The concentrate with the mass ratio of Al2O3 to SiO2(m(Al2O3)/m(SiO2))8.90 and the recovery of Al2O3 86.98%is obtained from bauxite ore(m(Al2O3)/m(SiO2)=5.68)in pH range of 9.5-10.0 by using sodium carbonate(5 kg/t)and sodium polyacrylate(7 g/t)as dispersant and flocculant respectively.Sodium carbonate acts as both pH modifier and favorable dispersant for aluminosilicates.The high performance of sodium polyacrylate on flocculation for diaspore is contributed to the carboxyl of sodium polyacrylate that interacts with active Al sites on diaspore by chemical absorption,and the hydrogen bond effects between hydroxyl group of macromolecule and surface Al—OH on diaspore to accelerate the sedimentation of diaspore. 展开更多
关键词 diasporic-bauxite sodium carbonate sodium polyacrylate ratio of Al2O3 to SiO2 selective flocculation FLOCCULANT dispersant
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部分引进小麦品种(系)高分子量谷蛋白亚基组成分析
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作者 秦江敏 陆和平 +3 位作者 李家敏 葛昌斌 徐如宏 张庆勤 《山地农业生物学报》 2006年第1期5-8,共4页
通过十二硫酸酯钠—聚丙烯酰胺凝胶电泳技术(SDS-PAGE),对108个小麦品种(系)的高分子量谷蛋白亚基分析。结果表明,材料中亚基组成丰富,检测到15种亚基和26种亚基组成。其中,在Glu-A1位点上,1亚基出现的频率最高,为59.3%;在Glu-B1位点上,... 通过十二硫酸酯钠—聚丙烯酰胺凝胶电泳技术(SDS-PAGE),对108个小麦品种(系)的高分子量谷蛋白亚基分析。结果表明,材料中亚基组成丰富,检测到15种亚基和26种亚基组成。其中,在Glu-A1位点上,1亚基出现的频率最高,为59.3%;在Glu-B1位点上,7+8亚基类型出现的频率最高,为27.8%;在Glu-D位点上,2+12亚基出现频率最高,达68.5%,5+10亚基出现频率为17.6%。在所分析的材料中,还出现了少见的特殊亚基6*+8*。 展开更多
关键词 小麦 高分子量谷蛋白亚基 十二硫酸-聚丙烯酰胺凝胶电泳 品质育种
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Application of the High Molecular Water-keeping Compound Sodium Polyacrylate in Agriculture 被引量:1
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作者 Li Qingfeng,Liu Delin,Jin Longxin,and Wu Lijun Hunan Institute of Atomic Energy Application in Agriculture,Changsha 410125,China 《Hunan Agricultural Science & Technology Newsletter》 2001年第4期24-26,共3页
The properties of the high molecular water-absorbing compound sodium polyacrylate (SP) and its application in agriculture are reviewed;and its safety in application is also introduced.
关键词 sodium polyacrykte high molecular water-absorbing material agricultural application
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