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Thermodynamics of α-angelicalactone polymerization

机译:α-天使内酯聚合的热力学

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AbstractThermodynamics of sodium butoxide-catalyzed polymerization of α-angelicalactone (a five-member unsaturated lactone) is studied by calorimetric methods. A polymer with Mw?=?2,500?g/mol and the ratio of C–O to C–C inter-monomeric bonds 87–13% is obtained; this polymerization is characterized by the values of ΔHpol°?=??33.41?kJ/mol, ΔSpol°?=??42.69?J/(mol?K) and ΔGpol°?=??20.68?kJ/mol. This and similar polymers and copolymers are biodegradable and can be produced from commercially available green bio-platform feedstock: renewable carbohydrates and levulinic acid.
机译:摘要用量热法研究了丁醇钠催化α-天使内酯(五元不饱和内酯)聚合反应的热力学。得到的聚合物的Mw?=?2,500?g / mol,C–C与C–C间单体键的比例为87–13%。该聚合的特征在于,ΔHpol°α=Δε33.41ΔkJ/ mol,ΔSpol°α=Δε42.69ΔJ/(molΔK),ΔGpol°α=Δε20.68ΔkJ/ mol。该和类似的聚合物和共聚物是可生物降解的,可以从可商购的绿色生物平台原料:可再生的碳水化合物和乙酰丙酸生产。

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