内蒙古工业大学学报（自然科学版）
內矇古工業大學學報（自然科學版）
내몽고공업대학학보（자연과학판）
JOURNAL OF INNER MONGOLIA UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2013年
3期
184-188
,共5页
纳米粒子%乳酸钙%乙醇%分散%等电点
納米粒子%乳痠鈣%乙醇%分散%等電點
납미입자%유산개%을순%분산%등전점
nanopartical%calcium lactate%ethanol%distribution%isoelectric point
本文采用氢氧化钙与乳酸制备纳米级乳酸钙，针对氢氧化钙溶解度低于乳酸钙溶解度的特点，提出采用电导率法测定乳酸钙的过饱和度，在乳酸钙溶液接近饱和时，过滤除去未反应的氢氧化钙，抑制目标产物二次成核；并采用分光光度计确定乙醇的加入对乳酸钙纳米粉体的分散作用；采用自动电位滴定仪测定乳酸钙粉体的等电点，通过调节反应体系及洗涤液的PH远离乳酸钙粉体的等电点，可以抑制团聚。研究结果表明：向滤液中加入适量的乙醇，促进成核，抑制晶体的生长，并提高纳米粉体的分散性；乙醇的加入量为R＝1∶1（R＝V乙醇/V反应溶液）；洗涤液采用醇与氢氧化钙水溶液，所制备的纳米粒子的平均粒径达到纳米级别。
本文採用氫氧化鈣與乳痠製備納米級乳痠鈣，針對氫氧化鈣溶解度低于乳痠鈣溶解度的特點，提齣採用電導率法測定乳痠鈣的過飽和度，在乳痠鈣溶液接近飽和時，過濾除去未反應的氫氧化鈣，抑製目標產物二次成覈；併採用分光光度計確定乙醇的加入對乳痠鈣納米粉體的分散作用；採用自動電位滴定儀測定乳痠鈣粉體的等電點，通過調節反應體繫及洗滌液的PH遠離乳痠鈣粉體的等電點，可以抑製糰聚。研究結果錶明：嚮濾液中加入適量的乙醇，促進成覈，抑製晶體的生長，併提高納米粉體的分散性；乙醇的加入量為R＝1∶1（R＝V乙醇/V反應溶液）；洗滌液採用醇與氫氧化鈣水溶液，所製備的納米粒子的平均粒徑達到納米級彆。
본문채용경양화개여유산제비납미급유산개，침대경양화개용해도저우유산개용해도적특점，제출채용전도솔법측정유산개적과포화도，재유산개용액접근포화시，과려제거미반응적경양화개，억제목표산물이차성핵；병채용분광광도계학정을순적가입대유산개납미분체적분산작용；채용자동전위적정의측정유산개분체적등전점，통과조절반응체계급세조액적PH원리유산개분체적등전점，가이억제단취。연구결과표명：향려액중가입괄량적을순，촉진성핵，억제정체적생장，병제고납미분체적분산성；을순적가입량위R＝1∶1（R＝V을순/V반응용액）；세조액채용순여경양화개수용액，소제비적납미입자적평균립경체도납미급별。
The purpose of the present work nanoparticals lactate calcium were prepared using Lactic acid and calcium hydroxide as raw materials ,reactant concentration of lactate calcium was measured by conductivity method for solution of calcium hydroxide is lower than solution of lactate calcium , secondary nucleation were effectively restrained by removing Unreacted calcium hydroxide while approach saturation of lactate calcium , the effects of some proprate ethanol additive on distribution of nanoparticals lactate calcium were studied by spectrophotometer and particle size analyzer , By adjusting washing liquid and reaction system pHs , pHs of reaction system and washing the powder from the isoelectric point of calcium lactate powder can inhibit the agglomeration of nanopowder .the present result showed that appropriate ethanol additive to filtered liquor improve nucleation , restrain growth rate of crystalline and improve particle size distribution .Quantity of proprate addition ethanol is R =1∶1(R=Vethano/Vreation solution), washing liquid is mixing solution of Ca(OH)2 and ethanol .
