摘要
茂金属线型低密度聚乙烯(mLLDPE)和传统线型低密度聚乙烯(LLDPE)薄膜经紫外灯照射不同时间后,用红外光谱和差示扫描量热法对薄膜跟踪测试。发现mLLDPE的羰基指数及不饱和碳碳双键的变化快于LLDPE;mLLDPE的氧化初始温度及熔融热焓的变化也明显低于LLDPE。
The properties of metallocene linear low density polyethylene （mLLDPE） and linear low density polyethylene （LLDPE） films were analyzed with infrared spectroscopy and differential scanning calorimetry after irradiating under ultraviolet ray for different times. The variation in carbonyl index and unsaturated carbon-carbon double bond of mLLDPE was faster than those of LLDPE. The initial temperature of oxidation and variation in enthalpy of melting of mLLDPE was also significantly lower than LLDPE.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2006年第5期17-19,共3页
China Synthetic Resin and Plastics
关键词
茂金属线型低密度聚乙烯
薄膜
光氧化
热力学降解
metallocene linear low density polyethylene
film
photooxidation
thermodynamic degradation
