摘要
用DSC技术测定了N—水杨叉替-β-丙氨酸(Ⅰ)和N-水杨叉替-间-氨基苯甲酸(Ⅲ)希夫碱的熔融焓和熔融熵;对于希夫碱(Ⅰ),其值分别是28.50±0.22kJ·mol^(-1)和69.86±0.27J·mol^(-1)·K^(-1);对于希夫碱(Ⅲ),其值分别是33.11±0.08kJ·mol^(-1)和71.36±0.18J·mol^(-1)·K^(-1)。(Ⅰ)~(Ⅳ)四种希夫碱的热分解行为也采用TG-DTG-DTA技术进行了研究。
The fusion enthalpies and entropies of N-salicylidcnc-β-alaninc (Ⅰ) and N-salicylidcnc-m-aminobenzoic acid (Ⅲ) Schiff bases have been determined by using DSC technique, the values obtained for the Schiff base (Ⅰ) are 28.50±0.22 K.J mol^(-1).k and 69.86±0.27J.mol_(-1)· k_(-1), the Values for the scruff basc(Ⅲ) arc 33.11± 0.08kJ· mol_(-1) and 71.36± 0.18J.mol_(-1)·k_(-1), respectively. Thermal decomposition behaviours for the title Sehiff bases were also studied by means of TG-DTG-DTA techniques.
出处
《西北大学学报(自然科学版)》
CAS
CSCD
1991年第1期39-42,共4页
Journal of Northwest University(Natural Science Edition)
关键词
西佛碱
熔融焓
熔融熵
热分解
Schiff base
Fusion enthalpy and entropy
DSC