| |
Rapidly in situ-forming degradable hydrogels from dextran thiols through michael addition
Thiol-functionalized dextrans (dex-SH) (M-n,M-dextran = 14K or 31K) with degrees of substitution (DS) ranging from 12 to 25 were synthesized and investigated for in situ hydrogel formation via Michael type addition using poly(ethylene glycol) tetra-acrylate (PEG-4-Acr) or a dextran vinyl sulfone conjugate with DS 10 (dex-VS DS 10). Dex-SH was prepared by activation of the hydroxyl groups of dextra...
http://www.polymer.cn//ss/zhongzhiyuan/publicationsshow_1004.html |
| |
乙酰丙酮/丙烯酸酯Michael加成产物的直接光聚合研究
关键字：Michael加成 光聚合 乙酰丙酮
紫外光固化技术因其高效、节能、低排放等优点而发展迅速，光引发剂一般是光固化体系中的重要组分。但参与光引发剂激光解碎片存在渗透前一、进一步光化学反应剂挥发、易导致气味、毒性、黄变等弊病，限制了光固化技术的应用。
http://www.polymer.cn/research/dis_info3064 |
| |
乙酰丙酮/丙烯酸酯Michael加成产物的直接光聚合研究
关键字：Michael加成 光聚合 乙酰丙酮
紫外光固化技术因其高效、节能、低排放等优点而发展迅速，光引发剂一般是光固化体系中的重要组分。但参与光引发剂激光解碎片存在渗透前一、进一步光化学反应剂挥发、易导致气味、毒性、黄变等弊病，限制了光固化技术的应用。
http://www.polymer.cn/research/dis_info3064 |
| |
Ex astra: Life from the Stars Organic chemistry amidst the stars ( Michael Meyer, 天体生物学家, NASA)
【主要内容】 This paper is a short introduction to planetary formation with the emphasis on organic chemistry, astrobiology, and the origins of life in a popular and professional stype. The page also provides a few links to useful s...
http://www.polymer.cn/resource/11097resource.html |
| |
13. Synthesis and characterization of in situ cross-linked hydrogel based on self-assembly of thiol-modified chitosan with PEG diacrylate using Michael type addition.
A novel injectable in situ cross-linked hydrogel has been designed via Michael type addition between thiol-modified chitosan (CS–NAC) and PEG diacrylate (PEGDA). Hydrogel was rapidly formed in situ under physiological conditions. The gelation time depended on the content of free thiols in CS–NAC, temperature, and concentration of CS–NAC and PEGDA. Thermogravimetric analysis showe...
http://www.polymer.cn//ss/zhangxinge/publicationsshow_4636.html |
| |
水溶性壳聚糖的制备
关键字：水溶性壳聚糖,制备,Michael加成反应
壳聚糖是自然界中唯一的碱性氨基多糖，储量丰富，具有良好的生物相容性、生物可降解性和抗菌性等特性。由于其分子间和分子内存在较强的氢键作用，使得壳聚糖溶解性差。本文运用Michael加成反应对壳聚糖氨基进行修饰，来实现壳聚糖的酸溶性向水溶性的转变。
http://www.polymer.cn/research/dis_info7669 |
| |
水溶性壳聚糖的制备
关键字：水溶性壳聚糖,制备,Michael加成反应
壳聚糖是自然界中唯一的碱性氨基多糖，储量丰富，具有良好的生物相容性、生物可降解性和抗菌性等特性。由于其分子间和分子内存在较强的氢键作用，使得壳聚糖溶解性差。本文运用Michael加成反应对壳聚糖氨基进行修饰，来实现壳聚糖的酸溶性向水溶性的转变。
http://www.polymer.cn/research/dis_info7669 |
| |
Novel Injectable Biodegradable Glycol Chitosan-Based Hydrogels Crosslinked by Michael-Type Addition Reaction with Oligo(acryloyl carbonate)-b-Poly(ethylene glycol)-b-Oligo(acryloyl carbonate) Copolymers
Novel injectable biodegradable glycol chitosan hydrogels were developed based on thiolated glycol chitosan (GC-SH) and water soluble oligo(acryloyl carbonate)-b- poly(ethylene glycol)-b-oligo(acryloyl carbonate) (OAC-PEG-OAC) triblock copolymers via Michael-type addition reaction. The rheology measurements showed that robust hydrogels were formed rapidly upon mixing aqueous solutions of GC-SH an...
http://www.polymer.cn//ss/zhongzhiyuan/publicationsshow_4780.html |
| |
官能团化脂肪族聚酯
关键字：Michael加成反应 Baeyer-villiger氧化反应 生物材料 侧基官能团
生物可降解材料的活性化修饰已成为生物材料研究的焦点之一，对组织工程，尤其是对原位组织再生具有非常重要的意义。脂肪族聚酯是一类非常重要的生物医用材料，具有良好的生物相容性和生物间接性，以得到美国FDA认证，在医用缝合线、药物控制释放等淋浴已有广泛的临床意义哦能够，并可望在骨修复、人工软骨、人造皮肤、神经和血管等组织工程领域得到临川应用。
http://www.polymer.cn/research/dis_info2495 |
| |
医用聚酯的磷脂表面改性及其血液相容性研究
关键字：PET Michael加成 MPC 血液相容性
PET由于其良好的力学性能及对人体体液的高抗渗透型等，已经有应用于人工血管，心脏修补片等相关的研究报道，但其血液相容性还有待提高。
http://www.polymer.cn/research/dis_info2355 |
| |