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- Starting from lower molecular weight poly(D,L-lactic acid)(PDLLA) produced by direct melt polycondensation of D,L-lactic acid(D,L-LA),poly(lactic acid) drug delivery material was synthesized through diisocyanate chain extension. 以外消旋乳酸(D,L-LA)直接熔融聚合得到的低相对分子质量聚外消旋乳酸(PDLLA)为原料,通过二异氰酸酯扩链合成了聚乳酸类药物缓释材料。
- Keywords D;L-lactic acid;poly(glycolic acid-lactic acid);direct melt polycondensation;drug delivery carrier; 外消旋乳酸;聚乙醇酸-乳酸;直接熔融聚合;药物缓释载体;
- Keywords Polycaprolactone/Polyethylene Glycol/Polylactide (PCEL) Tri-component Copolymer;Direct Melt Polycondensation;Biodegradable Material;Intrinsic Viscosity; 关键词聚已内酯/聚乙二醇/聚乳酸三元共聚物;直接熔融聚合;生物降解材料;特性黏数;
- direct melt polycondensation 直接熔融缩聚
- Keywords polyl(actic acid)-polyethylene glycol(PLEG);direct melt polycondensation;biodegradable material;prepolymerization method;weight average relative molecular weight(Mw);drug delivery carrier; 聚乳酸-聚乙二醇(PLEG);直接熔融聚合;生物降解材料;预聚方式;相对分子质量;药物缓释载体;
- Keywords D;L-lactic acid(D;L-LA);direct melt polycondensation;isophorone diisocyanate(IPDI);chain extension in solution;poly(lactic acid) drug delivery material;physiological security; 外消旋乳酸(D;L-LA);直接熔融聚合;异佛尔酮二异氰酸酯(IPDI);溶液扩链;聚乳酸类药物缓释材料;生理安全性;
- Poly(PEG(1)-adipic anhydride(2)) was synthesized by melt polycondensation. 采用熔融缩聚法合成了PEG(1)-己二酸酐(2)聚合物。
- A new modifier of Polylactic acid (PLA)-Poly(adipate-co-propanetriol) (PGA) was prepared with glycerol and adipic acid by the melt polycondensation. 摘要以丙三醇(G)、己二酸(A)为原料,制备了一种新型聚乳酸(PLA)增韧改性剂-聚己二酸丙三醇酯(PGA)。
- The measures that optimizing the internal quality of bottle grade chip in the melt polycondensation and SSP stage were studied. 研究了熔融缩聚和固相缩聚阶段优化该瓶片内在品质的措施;
- The influence of melt polycondensation and solvent refluxing methods of lactide polymerization and chain extension agents on relative molecular weight of polylactide was studied. 研究了乳酸熔融缩聚和溶剂回流脱水缩聚两种聚合方法及几种扩链剂对乳酸聚合物相对分子质量的影响。
- Poly (propylene carbonate) (PPC)/organic montmorillonite (OMMT) composite were prepared by direct melt intercalation. 通过熔融插层法制备了聚碳酸亚丙酯(PPC)/有机蒙脱土(OMMT)复合材料。
- A new type of unsaturated poly (ester-amide) resin was prepared by melt polycondensation and characterized.Jute fibers (JF) were used to reinforce the new unsaturated poly (ester-amide). 摘要采用本体熔融聚合法制备了一种新型不饱和聚酯酰胺,并对不饱和聚酯酰胺进行了表征。
- Poly(propylene carbonate) (PPC)/organophilic montmorillonite (OMMT) nanocomposites were prepared by direct melt intercalation. 通过熔融插层法制备了聚碳酸亚丙酯(PPC)/有机蒙脱土(OMMT)纳米复合材料。
- The direct melt polymerization of poly(lactic acid-co-caprolactone) was studied by orthogonal experiment and SPSS software. 应用正交实验及SPSS统计软件研究聚乳酸-己内酯直接熔融聚合工艺。
- Thermotropic liquid crystalline copolyesters of BHET and PHB were firstly synthesized by melting polycondensation using BHET and PHB as coponents. 本实验第一次以对苯二甲酸乙二醇酯(BHET)和对羟基苯甲酸(PHB)为原料,采用熔融缩聚的方法合成了BHET-PHB热致液晶共聚酯。
- Polypropylene/nano-montmorillonite (PP/MMT)nano composite was prepared by direct melting intercalation method.Mechanical properties and melt flow rate were measured. 通过直接熔融插层法制得聚丙烯/纳米蒙脱土复合材料,测量了复合材料的力学性能及熔体流动速率。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- Direct melt condensation polymerization 直接熔融缩聚
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- Keywords lactic acid;direct polycondensation;polylactic acids biodegradable material;solution polycondensation;melt polycondensation; 乳酸;直接缩合;聚乳酸类生物降解材料;溶液聚合;熔融聚合;