Preparation, formulation and evaluation of novel photo-cured glass ionomers based on co-polymers of (meth)acrylated amino acids.
Preparation, formulation and evaluation of novel photo-cured glass ionomers based on co-polymers of (meth)acrylated amino acids.
复制标题
基于（甲基）丙烯酸酯氨基酸共聚物的新型光固化玻璃离聚物的制备、配制和评估。
DOI：
10.1163/156856206775997304
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Zhao,Jun
中科院分区：
文献类型：
--
作者：
Xie,Dong;Park,Jong-Gu;Faddah,Mona;Zhao,Jun
研制了一种新型光固化氨基酸结构玻璃离子水门汀。合成了基于谷氨酸和β-丙氨酸的甲基丙烯酸酯和丙烯酸酯衍生物，表征并用于构建聚链烯酸，并用水和Fuji II玻璃填料配制以形成自固化水泥。使用水泥的抗压强度（CS）和液体的粘度作为评价工具。研究了摩尔比和分子量对产物的影响。采用甲基丙烯酸缩水甘油酯（GM）对优化后的共聚物进行改性，并与水、丙烯酸和Fuji II LC填料配制成光固化水泥。考察了分子量、GM系留比、聚合物液比和玻璃填料粉/聚合物液（P/L）比对聚合物乳液性能的影响。CS，弯曲强度（FS）和粘度作为筛选工具，以找到最佳配方。在测试之前，将所有样品在37°C的蒸馏水中调理24小时或7天。结果表明，氨基酸结构的聚烯酸只能由氨基酸甲基丙烯酸酯衍生物或由丙烯酸酯衍生物与甲基丙烯酸酯共聚而成。在合成的众多共聚物中，摩尔比为8：2且MW为19.5 kg/mol的聚（甲基丙烯酰基谷氨酸-co-丙烯酰基β-丙氨酸）或聚（MGA-co-阿坝）为水泥提供了最高的机械强度和较低的工作粘度。对于光固化体系，GM系留比、聚合物含量和P/L比的影响显著。发现这些参数之间的适当比例平衡是非常重要的。分子量的影响不显著。FS的自固化实验水泥比Fuji II的高32%，CS和CSB的自固化实验水泥与Fuji II相同。光固化实验水泥在CS、FS和FS中比Fuji II LC高19%、47%和176%。
A novel photo-cured amino-acid-constructed glass–ionomer cement system has been developed. Glutamic acid- and beta-alanine-based methacrylate and acrylate derivatives were synthesized, characterized and used to construct the polyalkenoic acids and formulated with water and Fuji II glass filler to form self-cured cement. Compressive strength (CS) of the cement and viscosity of the liquid were used as tools for evaluation. The effects of molar ratio and molecular weight (MW) were studied. The optimized co-polymer was further modified with glycidyl methacrylate (GM) and formulated with water, acrylic acid and Fuji II LC filler to form photo-cured cement. The effects of MW, GM tethering ratio, polymer liquid ratio and glass filler powder/polymer liquid (P/L) ratio were investigated. CS, flexural strength (FS) and viscosity were used as screening tools to find the optimal formulation. All the specimens were conditioned in distilled water at 37°C for either 24 h or 7 days prior to testing. The results show that amino-acid-constructed polyalkenoic acids can be formed only from amino acid methacrylate derivatives or by co-polymerization of methacrylate with acrylate derivatives. Among the numerous co-polymers synthesized, poly(methacryloyl glutamic acid-co-acryloyl beta-alanine) or poly(MGA-co-ABA) with the molar ratio of 8 : 2 and MW of 19.5 kg/mol contributed the highest mechanical strengths and lower working viscosity to the cement. For photo-cured system, the effects of GM tethering ratio, polymer content and P/L ratio were significant. It is found that an appropriate ratio balance between these parameters is very important. The effect of molecular weight was not significant. The self-cured experimental cement was 32% higher in FS than Fuji II and the same in CS and DTS as Fuji II. The photo-cured experimental cement was 19%, 47% and 176% higher in CS, DTS and FS than Fuji II LC.
登录
查看更多内容
鸡胚肌的翻译抑制剂 10S 细胞质核糖核蛋白。
DOI：
--
发表时间：
1981
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Mukherjee,AK;Sarkar,S
通讯作者：
Sarkar,S
骨骼肌在体外通过骨基质定向转化成软骨来合成蛋白多糖。
DOI：
--
发表时间：
1983
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Nathanson,MA
通讯作者：
Nathanson,MA
影响因子：
64.5
作者：
JOHN, HA;PATRINOUGEORGOULAS, M;JONES, KW
通讯作者：
JONES, KW
分化肌肉培养物中肌球蛋白轻链的合成和编码轻链样多肽的可翻译 mRNA 的积累。
DOI：
10.1111/j.1432-0436.1977.tb00929.x
发表时间：
1977
期刊：
Differentiation; research in biological diversity
影响因子：
--
作者：
Z. Yablonka;D. Yaffe
通讯作者：
D. Yaffe
对应于肌球蛋白轻链 1、2 和 3、肌钙蛋白-C、肌钙蛋白-T、α-原肌球蛋白和 α-肌动蛋白的 cDNA 序列的克隆和表征。
影响因子：
4.8
作者：
L. Garfinkel;M. Periasamy;B. Nadal
通讯作者：
B. Nadal