细乳液法制备了正十二醇/聚合物相变纳米胶囊（PCNs）,研究了乳化剂、共聚单体的用量以及正十二醇的投料量对纳米胶囊结构与性能的影响。采用DSC、TG、TEM以及激光粒度分析仪等手段分别对聚合物纳米微球的粒径大小及粒径分布、性能和微观形态等进行表征分析。研究表明亲水共聚单体的加入有助于对相变材料的包封,当AM用量为2%时,苯乙烯与正十二醇的投料比为1∶1时,制备的纳米胶囊相变潜热及相变材料包封效率分别为109.3J/g和92.1%。
The phase change nanocapsules（PCNs） with n-dodecanol as core and St-BA-AM co-polymer as shell were prepared by miniemulsion polymerization.The influence of emulsifier,co-monomer and the mass ratio of styrene to n-dodecanol on the structure and properties of nanocapsules were studied.The particles size and distribution,structure,properties and micro-morphology of nanocapsules were characterized by using DSC,TG,TEM,and laser particle diameter analyzer.The results showed that co-monomer acrylamine（AM） is helpful for encapsulation of n-dodecanol.As the mass ratio of styrene to n-dodecanol was 1∶1,the phase change latent heat of nanocapsule and encapsulation efficiency of n-dodecanol reach to the highest value of 109.3J/g and 92.1%,respectively.
参考文献
| [1] | 余飞,陈中华,曾幸荣.正十二醇相变储热微胶囊的制备与表征[J].高分子材料科学与工程,2009(06):135-138. |
| [2] | 张正国,文磊,方晓明,邵刚,黄弋峰.复合相变储热材料的研究与发展[J].化工进展,2003(05):462-465. |
| [3] | 李志广,黄红军,张敏,万红敬.低温相变材料十二醇-脂肪酸二元体系相变温度的研究[J].化工新型材料,2007(11):55-56,64. |
| [4] | Hu J;Yu H;Chen YM;Zhu MF .Study on phase-change characteristics of PET-PEG copolymers[J].Journal of Macromolecular Science. Physics,2006(4):615-621. |
| [5] | Ahmet Sari;Ali Karaipekli .Thermal conductivity and latent heat thermal energy storage characteristics of paraffin/expanded graphite composite as phase change material[J].Applied thermal engineering: Design, processes, equipment, economics,2007(8-9):1271-1277. |
| [6] | 陈中华,肖春香.十二醇/蒙脱土复合相变储能材料的制备及性能研究[J].功能材料,2008(04):629-631. |
| [7] | Taguchi Y;Yokoyama H;Kado H;Tanaka M .Preparation of PCM microcapsules by using oil absorbable polymer particles[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2007(1/3):41-47. |
| [8] | Marissa Volz;Ulrich Ziener;Ulrich Salz .Preparation of protected photoinitiator nanodepots by the miniemulsion process[J].Colloid and polymer science,2007(6):687-692. |
| [9] | 方玉堂,匡胜严,张正国,高学农.纳米胶囊相变材料的制备[J].化工学报,2007(03):771-775. |
| [10] | Ni PH;Zhang MZ;Ma LH;Fu SK .Poly(dimethylamino)ethyl methacrylate for use as a surfactant in the miniemulsion polymerization of styrene[J].Langmuir: The ACS Journal of Surfaces and Colloids,2006(14):6016-6023. |
| [11] | Fei Yu;Zhong-Hua Chen;Xing-Rong Zeng .Preparation, characterization, and thermal properties of microPCMs containing n-dodecanol by using different types of styrene-maleic anhydride as emulsifier[J].Colloid and polymer science,2009(5):549-560. |
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