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(Macromol. Rapid Commun)Amphiphilic Imbalance and Stabilization of Block Copolymer Micelles on-Demand through Combinational Photo-Cleavage and Photo-Crosslinking
An amphiphilic block copolymer of poly(ethylene oxide)-b-poly((N-methacryloxy phthalimide)-
co-(7-(4-vinyl-benzyloxyl)-4-methylcoumarin)) (PEO45-b-P(MAPI36-co-VBC4)) is designed to
improve the micellar stability during the photo-triggered release of hydrophobic cargoes.
Analysis of absorption and emission spectra, solution transmittance, dynamic light scattering,and transmission electro...
http://www.polymer.cn//ss/jiangjq/publicationsshow_12996.html |
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Bottom-Up Fabrication of Ultrathin 2D Zr Metal–Organic Framework Nanosheets through a Facile Continuous Microdroplet Flow Reaction
Direct synthesis of the ultrathin and discrete 2D metal-organic framework (MOF) nanosheets is extremely challenging. Herein, we present the first facile continuous bottom-up strategy
for preparing ultrathin (～3 nm) 2D MOF nanosheets with high crystallinity comprising assemblies of a few layers. Unlike conventional solvothermal synthetic methods for 2D MOFs, the weak interlayer interaction ...
http://www.polymer.cn//ss/zhaoxuebo/publicationsshow_12980.html |
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Green Poly(β-hydroxybutyrate)/Starch Nanocrystal Composites: Tuning the Nucleation and Spherulite Morphology through Surface Acetylation of Starch Nanocrystal
Carbohydrate Polymers, 2018, 195C, 79-88.
ABSTRACT:
Starch nanocrystal (SNC) particles were used as the filler to prepare green composites with biodegradable poly(β-hydroxybutyrate) (PHB). An interesting way to tune the nucleation and banded morphology of composites by the surface acetylation of SNC was proposed. Pristine SNC acts as the nucleating agent, while acetylated...
http://www.polymer.cn//ss/wudefeng/publicationsshow_12883.html |
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Facile preparation of functionalized MoS2/polyethylene nanocomposites through in situ polymerization with MoS2 containing Ziegler–Natta catalyst
A facile method for preparing polyethylene (PE)/octadecylamine-functionalized MoS2 (ODA-MoS2) nanocomposites through in situ polymerization with an ODA-MoS2-MgClTiCl4 catalyst was developed. The catalyst was synthesized simply by the treatment of ODA-MoS2 with a Grignard reagent, followed by anchoring of a TiCl4 catalyst. The resulting catalyst exhibited higher activity toward ethylene polymeriz...
http://www.polymer.cn//ss/polyhx/publicationsshow_12748.html |
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Fabrication of polyethylene/graphene nanocomposites through in situ polymerization with a spherical graphene/MgCl2-supported Ziegler-Natta catalyst
In this study, a spherical grapheme (G)/MgCl2-supported Ti-based Ziegler-Natta catalyst was prepared by a facile spray-coagglomeration method. The effects of graphene on catalyst morphology, ethylene polymerization behavior, and polymer properties were investigated. The resultant product was spherical, and the G was well dispersed in the whole polyethylene (PE) matrix. In addition, the thermal s...
http://www.polymer.cn//ss/polyhx/publicationsshow_12738.html |
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Preparation of Poly(ionic liquid) Nanoparticles through RAFT/MADIX Polymerization-Induced Self-Assembly
We report herein a facile method for hierarchical regulation of the morphology of poly(ionic liquid) (PIL) nanoparticles through RAFT/MADIX aqueous polymerization-induced self-assembly of 3-n-dodecyl-1-vinylimidazolium bromide, by using PEG-xanthate as the macro-CTA. Rigid straight rods were formed over a broad composition range even at low solids, due to the high
incompa...
http://www.polymer.cn//ss/wangjianli/publicationsshow_12374.html |
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[Angew. Chem. Int. Ed.] Tuning Crystallization Pathways through Mesoscale Assembly of Biomacromolecular Nanocrystals
Macromolecular crystallization has many implications in biological and materials science. Similar to the crystallization of other molecules, macromolecular crystallization conventionally considers a critical nucleus, followed by crystallographic packing of macromolecules to drive further crystal growth. Here, we discover a distinctive macromolecular crystallization pathway by developing a concep...
http://www.polymer.cn//ss/yangpeng/publicationsshow_12164.html |
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Facile extraction of thermally stable cellulose nanocrystals with a high yield of 93% through hydrochloric acid hydrolysis under hydrothermal conditions
A facile approach for extracting cellulose nanocrystals (CNCs) was presented through hydrochloric acid hydrolysis of cellulose raw materials under hydrothermal conditions. The influences of preparation parameters, such as reaction time, reaction temperature, and acid-to-cellulose raw material ratio, and different neutralization methods on the yield, microstructure and properties w...
http://www.polymer.cn//ss/yuhouyong/publicationsshow_10494.html |
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The stability of covalently immobilization of TEMPO on the polymer surface through ionic liquid linkage: a comparative and model research
Covalently immobilizing the active sites or ligands on a polymer surface is an efficient strategy to achieve a full use of expensive organic parts. In this work, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) was anchored onto polystyrene beads through an ether bond or an ionic liquid bridge. We quantitatively compared their thermal stabilities at nitrogen atmosphere and their chemical stabilities i...
http://www.polymer.cn//ss/wangjianli/publicationsshow_10419.html |
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41. Microporous polyimide networks constructed through a two-step polymerization approach, and their carbon dioxide adsorption performance
Based on a dianhydride monomer 2,5- bis(3,4- dicarboxyphenoxy)-4''''''''''''''''-phenylethynyl biphenyl (PEPHQDA) containing a crosslinkable phenylethynyl pendant group, microporous polyimide networks (HBPI-CRs) were prepared through a two- step pathway combining polymerization and crosslinking reactions. Specifically microporous features such as surface morphology, microporous structure and unifo...
http://www.polymer.cn//ss/guanshaowei/publicationsshow_10384.html |
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