CAJ | 학술논문

采用偏光显微镜（POM ）、扫描电子显微镜（SEM ）和广角X射线衍射仪（WAXD）等分析手段，研究了聚偏氟乙烯／端羟基多壁碳纳米管（PVDF／M WCN T s‐O H ）共混体系在不同配比和结晶温度下的结晶形貌及晶体结构变化，并探索了端羟基多壁碳纳米管对聚偏氟乙烯晶相间相转变行为影响的规律。结果表明：纯PVDF在低温下形成尺寸较大的α相球晶，高温时γ相球晶的含量和尺寸同时增大；在相同的温度下向PVDF中加入M WCN T s‐O H后，PVDF的成核密度明显增大并导致球晶尺寸减小，表明M WCN T s‐O H对PVDF具有强烈的异相成核作用。添加M WCN T s‐O H前后PVDF 折叠链片晶的扭转方式发生了根本性改变，促进了PVDF的α相球晶到β相晶体结构的转变，其中M WCN T s‐O H加入后PVDF的α相球晶含量有减少趋势，β相含量增加明显。
채용편광현미경（POM ）、소묘전자현미경（SEM ）화엄각X사선연사의（WAXD）등분석수단，연구료취편불을희／단간기다벽탄납미관（PVDF／M WCN T s‐O H ）공혼체계재불동배비화결정온도하적결정형모급정체결구변화，병탐색료단간기다벽탄납미관대취편불을희정상간상전변행위영향적규률。결과표명：순PVDF재저온하형성척촌교대적α상구정，고온시γ상구정적함량화척촌동시증대；재상동적온도하향PVDF중가입M WCN T s‐O H후，PVDF적성핵밀도명현증대병도치구정척촌감소，표명M WCN T s‐O H대PVDF구유강렬적이상성핵작용。첨가M WCN T s‐O H전후PVDF 절첩련편정적뉴전방식발생료근본성개변，촉진료PVDF적α상구정도β상정체결구적전변，기중M WCN T s‐O H가입후PVDF적α상구정함량유감소추세，β상함량증가명현。
In this article ,study poly (vinylidene fluoride)/hydroxy‐multi‐walled carbon nano‐tubes (PVDF/MWCNTs‐OH) blends of crystalline morphology and crystal structure at dif‐ferent temperature and different mass ratio by means of polarizing optical microscope (POM ) and scanning electron microscope (SEM ) .And also explores the hydroxyl‐terminated multi‐walled carbon nanotubes on the PVDF crystalline phase transition behavior influence .The results showed that :at low temperature , the large α‐phase PVDF spherulites are formed ,but at high temperature γphase content and size of the spherulites is increased .At the same temperature ,MWCNTs‐OH is added to the PVDF ,case nucleation density was sig‐nificantly increased but spherulite size decreased ,so M WCN T s‐O H on PVDF had a strong heterogeneous nucleation effect ;PVDF lamellae folded chain has undergone a fundamental change after adding MWCNTs‐OH ,it promotes the transformation of crystal structure of α‐phase to β‐phase of PVDF ,and content of α‐phase has a decreasing trend however β‐phase in‐creased significantly .