利用含有二個末端碳-碳雙鍵基團的雙馬來醯亞胺( N’-bismaleimide-4,4-diphenylmethane , BMI )、含有一個末端碳-碳雙鍵基團的N -苯基馬來醯亞胺( N’-Phenylmaleimide , PMI )、含有一個CH2基團的1,3巴比妥酸( 1,3-Dimethylbarbituric acid , 1,3-DMBTA )和含有兩個NH基團的5,5巴比妥酸( 5,5-Dimethylbarbituric acid , 5,5-DMBTA )以及可抑制自由基反應的對苯二酚( Hydroquinone , HQ )來探討巴比妥酸( Barbituric acid , BTA )上的CH2基團和NH基團對於雙馬來醯亞胺( N , N’-bismaleimide-4,4-diphenylmethane , BMI )末端上的兩個碳-碳雙鍵基團之反應性研究。
微分式掃描熱量分析儀( DSC )與核磁共振儀( NMR )在373 ~ 403 K得知雙馬來醯亞胺( BMI )與巴比妥酸( BTA )在N-甲基咯烷酮( NMP )溶劑中進行恆溫聚合反應，巴比妥酸( BTA )上的CH2為主要的反應基團，相較之下，巴比妥酸( BTA )上的兩個NH基團比較沒反應。
使用膠體滲透層析儀( GPC )得知自由基加成反應( 1,3-DMBTA、5,5-DMBTA/BMI )的分子量大於麥可加成反應( 1,3-DMBTA、5,5-DMBTA/BMI )以及1,3-DMBTA與BMI聚合反應的高分子之分子量大於5,5-DMBTA與BMI聚合反應的高分子。使用熱重/熱示差分析儀( TGA )得知BMI自身熱聚合反應和5,5-DMBTA與BMI聚合反應的熱穩定性最好，再來為BTA與BMI聚合反應，1,3-DMBTA與BMI聚合反應的熱穩定性最差。

The reactivity of the CH2 and NH groups of barbituric acid ( BTA ) toward the two terminal－C=C－groups of N,N’-bismaleimide-4,4-diphenylmethane ( BMI ) was studied with the aid of model compounds ( N,N’-bismaleimide-4,4’-diphenylmethane ( BMI ) containing two －C=C－ groups , N-phenylmaleimide ( PMI ) containg one －C=C－ group , 1,3-dimethylbarbituric acid ( 1,3-DMBTA ) containing one CH2 group , 5,5-dimethylbarbituric acid ( 5,5-DMBTA ) containing two NH groups per molecule ) and a molecular probe ( hydroquinone ( HQ ) ) that was capable of detecting free radical polymerization.
Kinetics studies ( DSC ) and molecular structure characterization ( H1-NMR ) showed that it was the CH2 group of BTA that predominated in the isothermal polymerization of BMI with BTA in N-methyl-2-pyrrolidone in the temperature range 373 ~ 403 K. On the contrary , the two NH groups of BTA did not contribute to polymerization of BMI with BTA to an appreciate extent.
Using Gel Permeation Chromatography ( GPC ) showed the relative molecular mass : polymer of Free radical addition reaction ( 1,3-DMBTA、5,5-DMBTA/BMI ) > polymer of Michael addition reaction ( 1,3-DMBTA、5,5-DMBTA/BMI ) and polymerization of 1,3-DMBTA/BMI > polymerization of 5,5-DMBTA/BMI. Using Termal Analyzer ( TGA ) showed the thermal stability : thermal polymerization of BMI and polymerization of 5,5-DMBTA/BMI > polymerization of BTA/BMI > polymerization of 1,3-DMBTA/BMI.

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