Development of A Restorative Resins having Good Fitness by Using Noncontractive Monomer

利用非收缩单体开发具有良好适应性的修复树脂

• 批准号: 07457481
• 负责人: MIYAZAKI Koji
• 金额: $ 3.14万
• 依托单位: FUKUOKA DENTAL COLLEGE
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07457481/
• 关键词: Expansible monomer; Restorative resin Polymerization; Ionic polymerization; Differential scanning calorimetry; 膨張性樹脂; スピロ化合物; 光重合

1. An experimental visible light irradiation apparatus for differential scanning calorimetry was designed and its usefulness in evaluating the polymerization heat of various monomers was confirmed.2. Four vinylcyclopropane derivatives having cyclic six-membered acetal were synthesized and the radical polymerization was carried out at 60,80,120ﾟC.Although colorless transparent polymers were isolated by HPLC for the most monomers, a crosslinked polymer was obtained in the case of vinyl cyclopropane derivative having six-membered acetal substituted an exomethylene.3. A methacrylate containing cyclic-carbonate (1,2-oxo-5-methacryloyloxymethyl-1,3-dioxane : CMA) was synthesized.4. Two copolymers of CMA and methyl methacrylate (MMA) were synthesized. They were 44/56 and 55/45 for monomer ratio in mol% and 40000-46000 for number average molecular weight.5. The comonomers consist of CMA/MMA in the ratio of 30/70 and 40/60 by weight with 1 mol% of radical initiators, BPO (benzoyl peroxide) and CQ (camphorquinone) /amine (dimethylamino ethylmethacry-late) vs. monomer were prepared and thermal-and photo-polymerization of them were carried out. The heat of polymerization in the case of photo-polymerization was higher than in case of thermal polymerization with BPO at 70ﾟC,however, the total heat of polymerization at 70ﾟC for 20min plus 120ﾟC for 20min was almost as same as obtained by photo-curing. AS result of FTIR analyzes, both polymerizations of the spiro carbonate group and vinyl group in CMA and iG were observed. CMA accelerated the polymerization of 1G.6. We have been investigating the polymerization of copolymers consist of CMA and MMA with radical or anionic initiators and MMA as liquid by the powder liquid method.

1.设计了可见光照射差示扫描量热法实验装置，并验证了该装置在测定各种单体聚合热方面的有效性.合成了四种六元环缩醛的乙烯基环丙烷衍生物，并在60、80、120 ℃下进行自由基聚合，虽然大多数单体经HPLC分离得到无色透明的聚合物，但六元环缩醛取代外亚甲基的乙烯基环丙烷衍生物得到交联聚合物.合成了含环碳酸酯的甲基丙烯酸酯（1，2-氧代-5-甲基丙烯酰氧基甲基-1，3-二氧六环：CMA）.合成了两种CMA与甲基丙烯酸甲酯（MMA）的共聚物。单体摩尔比为44/56和55/45，数均分子量为40000-46000.以CMA/MMA（30/70和40/60）为共聚单体，加入1mol%的自由基引发剂、BPO（过氧化苯甲酰）和CQ（蒽醌）/胺（甲基丙烯酸二甲氨基乙酯）为单体，进行了热聚合和光聚合。在光聚合的情况下的聚合热高于在70 ° C下用BPO热聚合的情况，然而，在70 ° C下20分钟加上120 ° C下20分钟的总聚合热几乎与通过光固化获得的相同。FTIR分析结果表明，CMA和IG中的螺环碳酸酯基团和乙烯基都发生了聚合反应。CMA促进了1G.6的聚合。本文采用粉末液相法研究了MMA与CMA在自由基或阴离子引发剂作用下的液态聚合。

项目成果

K.MIYAZAKI et al.: "The polymerization and properties of methacrylate bearing spiro-ortho ester and spiro-ortho carbonate" ACS National Meeting at Las Veras Dental Materials and Composite. (1997)

K.MIYAZAKI 等人：“带有螺原酸酯和螺原碳酸酯的甲基丙烯酸酯的聚合和性能”在拉斯维拉斯牙科材料和复合材料协会 ACS 全国会议上。

宮崎光治: "試作可視光線照射装置を用いたDSCによる光重合レジンの重合反応の検討" 福岡歯科大学学会雑誌. 24(投稿中). (1997)

Mitsuharu Miyazaki：“使用原型可见光照射装置通过DSC研究光聚合树脂的聚合反应”福冈牙科学院学报24（正在提交）。

宮崎光治ほか4名: "DSC用試作可視光線照射装置の検討" 福岡歯科大学学会雑誌. 23(4). 455-460 (1996)

Mitsuharu Miyazaki 等 4 人：“DSC 可见光照射装置原型的研究”福冈齿科大学学报 23(4) 455-460 (1996)。