INFLUENCE OF WATER-SOLUBLE AND INSOLUBLE PLASTICIZERS ON THE PHYSICAL AND MECHANICAL-PROPERTIES OF ACRYLIC RESIN COPOLYMERS
INFLUENCE OF WATER-SOLUBLE AND INSOLUBLE PLASTICIZERS ON THE PHYSICAL AND MECHANICAL-PROPERTIES OF ACRYLIC RESIN COPOLYMERS
复制标题
DOI：
10.1016/0378-5173(94)90180-5
复制
发表时间：
1994-03-30
影响因子：
5.8
通讯作者：
MCGINITY, JW
中科院分区：
文献类型：
--
作者：
GUTIERREZROCCA, JC;MCGINITY, JW
研究了不同类型和含量的增塑剂对平衡甲基丙烯酸共聚物的热性能和物理机械性能的影响。通过确定共聚物的热性能和物理机械性能对增塑剂浓度和分子结构的依赖性，研究了这种增塑的效率。使用气相色谱（GC）和顶空气相色谱技术分别专门测定聚合物薄膜中增塑剂和残留溶剂的水平，并排除任何溶剂引起的增塑。增塑剂对热性能的影响与甲基丙烯酸共聚物的机械行为有很强的相关性。结果表明，与甲基丙烯酸共聚物相互作用的能力可能不仅取决于增塑剂的水溶性，还取决于增塑剂的化学结构。在所研究的增塑剂中，三醋精 (TRI) 对降低聚合物脆性的效果最大，其次是柠檬酸三乙酯 (TEC)。与所研究的其他增塑剂（包括乙酰柠檬酸三乙酯（ATEC）、柠檬酸三丁酯（TBC）和乙酰柠檬酸三丁酯（ATBC））相比，这种效果与它们的分子大小差异以及随后与聚合物链相互作用的能力更强有关。
The effect of different types and levels of plasticizers on the thermal and physical-mechanical properties of equilibrated methacrylic acid copolymers was studied. The efficiency of this plasticization was studied by determining the dependence of the copolymer's thermal and physical-mechanical properties on plasticizer concentration and molecular structure. Gas chromatography (GC) and headspace-gas chromatography techniques were used to specifically determine the levels of plasticizer and residual solvent, respectively, in the polymeric film, and to exclude any solvent-induced plasticization. The effect of plasticizer on the thermal properties showed a strong correlation with the mechanical behavior of the methacrylic acid copolymer. Results indicated that the ability to interact with the methacrylic acid copolymer may not solely be dependent on the aqueous solubility of the plasticizer, but also on the chemical structure of the plasticizers. Of the plasticizers investigated, triacetin (TRI) had the greatest effect on reducing the brittleness of the polymer, followed by triethyl citrate (TEC). This effect was related to their differences in molecular size and subsequent greater ability to interact with the polymer chains as compared to the other plasticizers investigated including acetyl triethyl citrate (ATEC), tributyl citrate (TBC), and acetyl tributyl citrate (ATBC).