摘要
以无水AlCl3为催化剂 ,N 甲基吡咯烷酮为助剂 ,ClCH2 CH2 Cl为溶剂 ,将一种含萘环的新芳醚单体——— 4 ,4’ 二 (α 萘氧基 )二苯酮 (DNBP)分别与对苯二甲酰氯、间苯二甲酰氯、2 ,5 二氯对苯二甲酰氯等芳二酰氯通过低温溶液亲电共缩聚反应合成了 6种主链含 1,4 萘基结构的新型聚芳醚酮醚酮酮无规共聚物。考察了溶剂体系、反应温度、反应时间、单体摩尔浓度等聚合反应条件对聚合物分子量的影响 ,并用对数比浓粘度 (ηinh) ,IR ,DSC ,TG和WAXD等方法对其进行了分析表征。结果表明 :它们均为非晶态聚合物 ,有较高的玻璃化温度和优良的耐热性 ,可溶于一些强极性非质子溶剂中。并以CHCl3为溶剂 ,甲醇和正己烷为沉降剂用浊度滴定法测定了上述 6种聚合物的溶度参数 (δ)。
A novel kind of poly ether ketone ether ketone ketones containing 1,4 N naphthalene moieties in the main chain was synthesized by low temperature solution polycondensation of 4,4 di(α naphthoxy)benzophenone with aromatic diacid chlorides such as 2,5 dichloroterephthaloyl chloride, isophthaloyl chloride and terephthaloyl chloride, using 1,2 dichloroethane and N methylpyrrolidone as solvents in the presence of AlCl 3. The effects of reaction solvents system, reaction temperature, reaction time and monomer molarity on polymer molecular weight were studied. The polymers obtained were characterized by η inh ,IR, DSC, TG, WAXD etc. The results suggest that the polymers are non crystalline and have high glass transition temperatures(Tg=189℃～204℃), with good thermostabilities, and can be dissolved in some strong polar non protonic solvents. The solubility parameters of the polymers were determined by turbidity titration method,using chloroform as a solvent, hexane and methanol as precipitants.
出处
《合成化学》
CAS
CSCD
2003年第2期134-137,146,共5页
Chinese Journal of Synthetic Chemistry
基金
安徽省高等学校青年教师科研资助项目 (2 0 0 2jq15 6)
关键词
聚芳醚酮
合成
表征
l
4-萘基结构
工程塑料
poly(ether ketone ether ketone ketone)
1,4 naphthalene
low temperature solution polycondensation
aromatic diacid chloride
characterization
