Effects of organic encapsulation on the properties of magnetic PLLA/Fe 3O4 composites

Jing Zhang; Demei Yu; Anlin Lv; Yunchuan Xie; Guohe Hu; Honglu Liang; Chao Min

doi:10.1002/pen.21519

Effects of organic encapsulation on the properties of magnetic PLLA/Fe ₃O₄ composites

Jing Zhang
, Demei Yu
, Anlin Lv
, Yunchuan Xie
, Guohe Hu
, Honglu Liang
, Chao Min

School of Chemistry

Xi'an Jiaotong University
Xijing Hospital

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Organic-encapsulated Fe₃O₄ magnetic microspheres (MMS) were synthesized and used to prepare PLLA (poly (L-lactic acid))/MMS composites. The effects of organic encapsulation on the mechanical, thermal, and magnetic properties of the composites were investigated. When compared with the PLLA/Fe₃O₄ composite, the elongation ratio of the PLLA/MMS composite improved significantly (by nearly 300%). Scanning electron microscope (SEM) images of the fracture morphology revealed an interesting "silking" phenomenon within the PLLA/MMS composite, which explains the greatly improved toughness. The decreased crystallinity and increased thermal stability of the PLLA/MMS composite suggest the existence of strong interacting forces between the PLLA molecules and the organic layer of the MMS particles, thereby limiting the mobility of the macromolecular chains. A study of the composites' magnetic properties indicated that the saturation magnetization was determined by the relative Fe₃O₄ content in the matrix, but not the types of the filling particles. POLYM. ENG. SCI., 50:215-221, 2010.

Original language	English
Pages (from-to)	215-221
Number of pages	7
Journal	Polymer Engineering and Science
Volume	50
Issue number	2
DOIs	https://doi.org/10.1002/pen.21519
State	Published - 2010

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10.1002/pen.21519

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title = "Effects of organic encapsulation on the properties of magnetic PLLA/Fe 3O4 composites",

abstract = "Organic-encapsulated Fe3O4 magnetic microspheres (MMS) were synthesized and used to prepare PLLA (poly (L-lactic acid))/MMS composites. The effects of organic encapsulation on the mechanical, thermal, and magnetic properties of the composites were investigated. When compared with the PLLA/Fe3O4 composite, the elongation ratio of the PLLA/MMS composite improved significantly (by nearly 300\%). Scanning electron microscope (SEM) images of the fracture morphology revealed an interesting {"}silking{"} phenomenon within the PLLA/MMS composite, which explains the greatly improved toughness. The decreased crystallinity and increased thermal stability of the PLLA/MMS composite suggest the existence of strong interacting forces between the PLLA molecules and the organic layer of the MMS particles, thereby limiting the mobility of the macromolecular chains. A study of the composites' magnetic properties indicated that the saturation magnetization was determined by the relative Fe3O4 content in the matrix, but not the types of the filling particles. POLYM. ENG. SCI., 50:215-221, 2010.",

author = "Jing Zhang and Demei Yu and Anlin Lv and Yunchuan Xie and Guohe Hu and Honglu Liang and Chao Min",

year = "2010",

doi = "10.1002/pen.21519",

language = "英语",

volume = "50",

pages = "215--221",

journal = "Polymer Engineering and Science",

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TY - JOUR

T1 - Effects of organic encapsulation on the properties of magnetic PLLA/Fe 3O4 composites

AU - Zhang, Jing

AU - Yu, Demei

AU - Lv, Anlin

AU - Xie, Yunchuan

AU - Hu, Guohe

AU - Liang, Honglu

AU - Min, Chao

PY - 2010

Y1 - 2010

N2 - Organic-encapsulated Fe3O4 magnetic microspheres (MMS) were synthesized and used to prepare PLLA (poly (L-lactic acid))/MMS composites. The effects of organic encapsulation on the mechanical, thermal, and magnetic properties of the composites were investigated. When compared with the PLLA/Fe3O4 composite, the elongation ratio of the PLLA/MMS composite improved significantly (by nearly 300%). Scanning electron microscope (SEM) images of the fracture morphology revealed an interesting "silking" phenomenon within the PLLA/MMS composite, which explains the greatly improved toughness. The decreased crystallinity and increased thermal stability of the PLLA/MMS composite suggest the existence of strong interacting forces between the PLLA molecules and the organic layer of the MMS particles, thereby limiting the mobility of the macromolecular chains. A study of the composites' magnetic properties indicated that the saturation magnetization was determined by the relative Fe3O4 content in the matrix, but not the types of the filling particles. POLYM. ENG. SCI., 50:215-221, 2010.

AB - Organic-encapsulated Fe3O4 magnetic microspheres (MMS) were synthesized and used to prepare PLLA (poly (L-lactic acid))/MMS composites. The effects of organic encapsulation on the mechanical, thermal, and magnetic properties of the composites were investigated. When compared with the PLLA/Fe3O4 composite, the elongation ratio of the PLLA/MMS composite improved significantly (by nearly 300%). Scanning electron microscope (SEM) images of the fracture morphology revealed an interesting "silking" phenomenon within the PLLA/MMS composite, which explains the greatly improved toughness. The decreased crystallinity and increased thermal stability of the PLLA/MMS composite suggest the existence of strong interacting forces between the PLLA molecules and the organic layer of the MMS particles, thereby limiting the mobility of the macromolecular chains. A study of the composites' magnetic properties indicated that the saturation magnetization was determined by the relative Fe3O4 content in the matrix, but not the types of the filling particles. POLYM. ENG. SCI., 50:215-221, 2010.

UR - https://www.scopus.com/pages/publications/77249126998

U2 - 10.1002/pen.21519

DO - 10.1002/pen.21519

M3 - 文章

AN - SCOPUS:77249126998

SN - 0032-3888

VL - 50

SP - 215

EP - 221

JO - Polymer Engineering and Science

JF - Polymer Engineering and Science

IS - 2

ER -

Effects of organic encapsulation on the properties of magnetic PLLA/Fe ₃O₄ composites

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