Laboratoire de Chimie Appliquée et Environnement, Département de Chimie, Faculté des Sciences de Monastir, 5019, Tunisia.
Carbohydr Res. 2010 Jan 26;345(2):264-9. doi: 10.1016/j.carres.2009.11.006. Epub 2009 Nov 5.
In the present work, we studied the chemical modification of Posidonia with maleic (AM) and phthalic (AP) anhydrides, and in the absence of any solvent. We used tripropylamine (TPA) as a catalyst and the mixture underwent an ultrasonic pretreatment. The influence of ultrasonic pretreating time, reaction time, temperature, anhydride concentration, was investigated. The extent of maleation and phthalation was measured by the percent of ester groups (TE), which increased when there was a parallel increment of anhydride concentration, reaction time, and temperature. Evidence of maleation and phthalation of the waste Posidonia biomass was provided by FT-IR and CP/MAS(13)C NMR. Thermogravimetric investigation of chemically modified Posidonia indicated a better thermal stability in comparison with the untreated Posidonia.
在本工作中，我们研究了在没有任何溶剂的情况下，用马来酸酐（AM）和邻苯二甲酸酐（AP）对波西多尼亚进行化学修饰，并使用三丙胺（TPA）作为催化剂，混合物进行了超声预处理。考察了超声预处理时间、反应时间、温度、酸酐浓度的影响。通过酯基百分比（TE）测量马来化和酞化的程度，当酸酐浓度、反应时间和温度平行增加时，TE 增加。FT-IR 和 CP/MAS(13)C NMR 提供了波西多尼亚废生物质马来化和酞化的证据。与未经处理的波西多尼亚相比，化学改性的波西多尼亚的热重分析表明其热稳定性更好。
