本文選題：聚對二氧環(huán)己酮　切入點：辛酸亞錫　出處：《材料科學(xué)與工程學(xué)報》2016年01期 　論文類型：期刊論文

【摘要】：本文以辛酸亞錫(Sn(OCt)_2)為催化劑,乙二醇為引發(fā)劑,首次采用減壓輔助法合成聚對二氧環(huán)己酮(Poly(p-dioxanone),PPDO),并系統(tǒng)研究了引發(fā)劑、減壓時間及引發(fā)時間對聚合反應(yīng)的影響。利用紅外光譜(IR)、核磁光譜(~1H NMR)、特性粘度(η)、X射線廣角衍射(WAXD)及差示掃描量熱法(DSC)對聚合產(chǎn)物的結(jié)構(gòu)及熱力學(xué)性能進(jìn)行初步探討。IR、~1H NMR及WAXD測試結(jié)果表明:減壓法能夠得到高純度且晶型相同的PPDO產(chǎn)物。且在減壓12h時,單體轉(zhuǎn)化率達(dá)到最大值(86.5%)。引發(fā)6h時,單體轉(zhuǎn)化率達(dá)到84.5%。而未加引發(fā)劑時,單體轉(zhuǎn)化率僅為81.1%。DSC測試結(jié)果表明:產(chǎn)物的熔融溫度(T_m)與結(jié)晶溫度(T_c)均隨減壓時間及引發(fā)時間的延長呈現(xiàn)先上升后降低的趨勢。相比傳統(tǒng)方法,減壓輔助法能夠獲得更高的產(chǎn)率。同時有效地避免了溶解-沉淀提純而引入的雜質(zhì)。
[Abstract]:In this paper, Poly (p-Dioxanone) PPDOO _ (2) was synthesized by decompression assisted method with Sn-Sn-OCtO _ (2) octanoate as catalyst and ethylene glycol as initiator, and the initiator was studied systematically. The effect of decompression time and initiation time on the polymerization reaction. The structure and thermodynamic properties of the polymerization products were studied by IR, 1H NMR, WAXD and DSCS. The results of 1H NMR and WAXD test showed that the PPDO products with high purity and the same crystal form could be obtained by decompression method, and at 12 h of decompression, The monomer conversion reached the maximum value of 86.5% and reached 84.5% when the monomer was initiated for 6 h. When the initiator was not added, the monomer conversion reached 84.5%. The results of DSC test showed that both the melting temperature and crystallization temperature of the product increased first and then decreased with the prolongation of the decompression time and initiation time, compared with the traditional method, the monomer conversion was only 81.1% and the DSC test showed that the melt temperature and crystallization temperature of the product increased first and then decreased with the prolongation of the decompression time and initiation time. The vacuum assisted method can obtain higher yield and effectively avoid the impurities introduced by solution-precipitation purification.
【作者單位】： 四川大學(xué)物理科學(xué)與技術(shù)學(xué)院;
【基金】：國家國際科技合作專項資助項目(2013DFB50280)
【分類號】：TQ317

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周吐清;年產(chǎn)200噸辛酸亞錫生產(chǎn)裝置建成投產(chǎn)[J];湖北化工;1994年02期

2 張少華;聚氨酯制品用催化劑——辛酸亞錫研制成功[J];現(xiàn)代塑料加工應(yīng)用;1995年01期

3 王志剛，王向榮，，周毅;辛酸亞錫制備工藝研究[J];太原工業(yè)大學(xué)學(xué)報;1995年01期

4 潘煒;;聚醚型軟質(zhì)聚氨酯泡沫塑料生產(chǎn)配方中辛酸亞錫用量的確定方法[J];塑料;1988年05期

5 程超;宋興華;薛艷;;辛酸亞錫對氧化鋅催化制備丙交酯的影響[J];應(yīng)用化學(xué);2011年03期

6 陳佳;程超;王遠(yuǎn)亮;;氧化鋅-辛酸亞錫催化合成丙交酯[J];高分子材料科學(xué)與工程;2007年03期

7 周賢爵,李進(jìn),邵惠麗,胡學(xué)超;超臨界CO_2中聚乳酸的合成及表征[J];高分子材料科學(xué)與工程;2005年03期

8 馮啟蒙;馬愛潔;李昕;;聚L-乳酸的合成及其性能研究[J];價值工程;2012年18期

9 馬曉妍,石淑先,夏宇正,焦書科,李效玉;聚乳酸及其共聚物的制備和降解性能[J];北京化工大學(xué)學(xué)報(自然科學(xué)版);2004年01期

10 ;[J];;年期

本文編號：1593681