Reactive Nanoparticles Compatibilized Immiscible Polymer Blends: Synthesis of Reactive SiO2 with Long Poly(methyl methacrylate) Chains and the in Situ Formation of Janus SiO2 Nanoparticles Anchored Exclusively at the Interface
Wang, HT; Fu, Z; Zhao, XW; Li, YJ; Li, JY
2017
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
卷号9期号:16页码:14358-14370
文章类型期刊论文
摘要The exclusive location of compatibilizers at the interface of immiscible binary polymer blends to bridge the neighboring phases is the most important issue for fabricating desirable materials with synergistic properties. However, the positional stability of the compatibilizers at the interface remains a challenge in both scientific and technical points of view due to the intrinsic flexibility of compatibilizer molecules against aggressive processing conditions. Herein, taking the typical immiscible poly vinylidene fluoride (PVDF)/polylactic acid (PLLA) blend as an example, we demonstrate a novel approach, termed as the interfacial nanoparticle compatibilization (IPC) mechanism, to overcome the challenges by packing nanoparticles thermodynamically at the interface through melt reactive blending. Specifically, we have first synthesized nanosilica with both reactive epoxide groups and long poly(methyl methacrylate) (PMMA) tails, called reactive PMMA-graft-SiO2 (Epoxy-MSiO2), and then incorporated the Epoxy-MSiO2 into the PVDF/PLLA (50/50, w/w) blends by melt blending. PLLA was in situ grafted onto SiO2 by the reaction of the carboxylic acid groups with epoxide groups on the surface of SiO2. Therefore, the reacted SiO2 particles were exclusively located at the interface by the formation of the Janus-faced silica hybrid nanoparticles (JSNp) with pregrafted PMMA tails entangled with PVDF molecular chains in the PVDF phase and the in situ grafted PLLA chains embedded in the PLLA phase. Such JSNp with a distinct hemisphere, functioning as compatibilizer, can not only suppress coalescence of PVDF domains by its steric repulsion but also enhance interfacial adhesion via the selective interactions with the corresponding miscible phase. The interfacial location of JSNp is very stable even under the severe shear field and annealing in the melt. This IPC mechanism paves a new possibility to use the various types of nanoparticles as both effective compatibilizers and functional fillers for immiscible polymer blends.
关键词Reactive Blending Janus Sio2 Particles Interfacial Nanoparticle Compatibilization In Situ Reaction Immiscible Polymer Blends
DOI10.1021/acsami.7b01728
收录类别SCI
语种英语
WOS记录号WOS:000400321800061
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27432
专题中科院上海应用物理研究所2011-2018年
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Wang, HT,Fu, Z,Zhao, XW,et al. Reactive Nanoparticles Compatibilized Immiscible Polymer Blends: Synthesis of Reactive SiO2 with Long Poly(methyl methacrylate) Chains and the in Situ Formation of Janus SiO2 Nanoparticles Anchored Exclusively at the Interface[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(16):14358-14370.
APA Wang, HT,Fu, Z,Zhao, XW,Li, YJ,&Li, JY.(2017).Reactive Nanoparticles Compatibilized Immiscible Polymer Blends: Synthesis of Reactive SiO2 with Long Poly(methyl methacrylate) Chains and the in Situ Formation of Janus SiO2 Nanoparticles Anchored Exclusively at the Interface.ACS APPLIED MATERIALS & INTERFACES,9(16),14358-14370.
MLA Wang, HT,et al."Reactive Nanoparticles Compatibilized Immiscible Polymer Blends: Synthesis of Reactive SiO2 with Long Poly(methyl methacrylate) Chains and the in Situ Formation of Janus SiO2 Nanoparticles Anchored Exclusively at the Interface".ACS APPLIED MATERIALS & INTERFACES 9.16(2017):14358-14370.
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