Polylactide-based polyurethane shape memory nanocomposites (Fe3O4/PLAUs) with fast magnetic responsiveness

被引：27
作者：
Gu, Shu-Ying [1 ,2 ]
Jin, Sheng-Peng [1 ]
Gao, Xie-Feng [1 ]
Mu, Jian [1 ]
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China
[2] Tongji Univ, Key Lab Adv Civil Engn Mat, Minist Educ, Shanghai 201804, Peoples R China
来源：
SMART MATERIALS AND STRUCTURES | 2016年 / 25卷 / 05期
关键词：
shape memory polymers; polyurethanes; magnetic responsiveness; nanocomposites; IRON-OXIDE NANOPARTICLES; POLYMER NETWORKS; ELECTROMAGNETIC ACTIVATION; FE3O4; NANOPARTICLES; COPOLYMER; PERFORMANCE;
D O I：
10.1088/0964-1726/25/5/055036
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Polylactide-based polyurethane shape memory nanocomposites (Fe3O4/PLAUs) with fast magnetic responsiveness are presented. For the purpose of fast response and homogeneous dispersion of magnetic nanoparticles, oleic acid was used to improve the dispersibility of Fe3O4 nanoparticles in a. polymer matrix. A homogeneous distribution of Fe3O4 nanoparticles in the polymer matrix was obtained for. nanocomposites with low Fe3O4 loading content. A small. agglomeration was observed for. nanocomposites with 6 wt% and 9 wt% loading content, leading to a small. decline in the. mechanical properties. PLAU and its nanocomposites have glass transition around 52 degrees C, which can be used as the triggering temperature. PLAU and its nanocomposites have shape fixity ratios above 99%, shape recovery ratios above 82% for the first cycle and shape recovery ratios above 91% for the second cycle. PLAU and its nanocomposites also. exhibit a fast water bath or magnetic responsiveness. The magnetic recovery time decreases with an. increase in. the loading content of Fe3O4 nanoparticles due to an. improvement in heating performance for increased weight percentage of fillers. The nanocomposites have fast responses in an alternating magnetic field and. have potential application. in biomedical areas such as intravascular stent.
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页数：12
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共 53 条
[21]   Effect of strain hardening of shape memory polymer fibers on healing efficiency of thermosetting polymer composites [J].
Li, Guoqiang ;
Ajisafe, Oludayo ;
Meng, Harper .
POLYMER, 2013, 54 (02) :920-928
[22]   Shape memory polymer nanocomposite with multi-stimuli response and two-way reversible shape memory behavior [J].
Li, Wenbing ;
Liu, Yanju ;
Leng, Jinsong .
RSC ADVANCES, 2014, 4 (106) :61847-61854
[23]   Shape memory polymers and their composites in aerospace applications: a review [J].
Liu, Yanju ;
Du, Haiyang ;
Liu, Liwu ;
Leng, Jinsong .
SMART MATERIALS AND STRUCTURES, 2014, 23 (02)
[24]   Nanopaper enabled shape-memory nanocomposite with vertically aligned nickel nanostrand: controlled synthesis and electrical actuation [J].
Lu, Haibao ;
Liang, Fei ;
Gou, Jihua .
SOFT MATTER, 2011, 7 (16) :7416-7423
[25]   Shape memory effects of poly(L-lactide) and its copolymer with poly(ε-caprolactone) [J].
Lu, Xi Li ;
Cai, Wei ;
Gao, Zhiyong ;
Tang, Wen Jun .
POLYMER BULLETIN, 2007, 58 (02) :381-391
[26]   Conductive shape memory nanocomposites for high speed electrical actuation [J].
Luo, Xiaofan ;
Mather, Patrick T. .
SOFT MATTER, 2010, 6 (10) :2146-2149
[27]   Various shape memory effects of stimuli-responsive shape memory polymers [J].
Meng, Harper ;
Mohamadian, Habib ;
Stubblefield, Michael ;
Jerro, Dwayne ;
Ibekwe, Samuel ;
Pang, Su-Seng ;
Li, Guoqiang .
SMART MATERIALS AND STRUCTURES, 2013, 22 (09)
[28]   A review of stimuli-responsive shape memory polymer composites [J].
Meng, Harper ;
Li, Guoqiang .
POLYMER, 2013, 54 (09) :2199-2221
[29]   Biodegradable polymers as biomaterials [J].
Nair, Lakshmi S. ;
Laurencin, Cato T. .
PROGRESS IN POLYMER SCIENCE, 2007, 32 (8-9) :762-798
[30]   Damage healing ability of a shape-memory-polymer-based particulate composite with small thermoplastic contents [J].
Nji, Jones ;
Li, Guoqiang .
SMART MATERIALS & STRUCTURES, 2012, 21 (02)
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