POSS-enhanced shape-memory copolymer of polynorbornene derivate and polycyclooctene through ring-opening metathesis polymerization

Yang, Dan; Gao, Danyi; Zeng, Chi; Jiang, Ji-Sen; Xie, Meiran

doi:10.1016/j.reactfunctpolym.2011.08.009

Cited by 18 publications

(7 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…5a and b, there was one broad diffraction peak at around 2q ¼ 25 , which is ascribed to the periodicity parallel to the amorphous polymer chain. 26 These results further confirmed the structure of Au/crosslinked LCHBP nanohybrids.…”

Section: Fabrication and Characterization Of Nanohybridssupporting

confidence: 66%

Robust hybrid nanostructures comprising gold and thiol-functionalized polymer nanoparticles: facile preparation, diverse morphologies and unique properties

et al. 2012

Self Cite

View full text Add to dashboard Cite

Nanohybrids are generated via covalent integration of Au nanoparticles (NPs) with thiolfunctionalized crosslinked polymer NPs. The polymer NPs have been readily prepared by the controlled intramolecular crosslinking of long-chain highly branched polymers through the thiol-ene reaction in dilute solution, and the thiol groups on polymer NPs can be introduced and tailored by alternating the cross linkers with various thiol functionalities, which facilitates the further fabricatation of nanohybrids with different loadings of Au NPs. The structures and optical properties of these nanostructures are characterized by elemental analysis, IR, NMR, XPS, XRD, and UV-vis measurements. The morphologies of nanostructures are investigated via dynamic light scattering, atom force microscopy, transmission electron microscopy, and cryogenic transmission electron microscopy. The results reveal that the crosslinked polymer NPs have an average diameter of 45 nm, and Au NPs in the nanohybrids are isolated and distributed throughout the surface of the polymer NPs. When varying the concentrations, the hybrid nanostructures display diverse morphologies going through nanosphere, chainlike assembly and nanorod, accompanied with unique optical properties. Additionally, this type of hybrid nanostructure has high stability and recoverability in catalysis, and shows excellent efficiency for the reduction of nitro compounds.

show abstract

Section: Fabrication and Characterization Of Nanohybridssupporting

confidence: 66%

Robust hybrid nanostructures comprising gold and thiol-functionalized polymer nanoparticles: facile preparation, diverse morphologies and unique properties

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…Because of the sensitivity to environmental conditions, SMPs have found various applications, such as actuators, smart fabrics, heat shrinkage tubes for electronic packaging, and biomedical devices. Recently, considerable efforts have been expanded to develop SMPs, and excellent shape memory behaviors were observed in many polymers including polynorbornene, poly(ε-caprolactone), polyurethanes, their copolymers, etc. − Although SMPs derived from biomass have been also studied, most of them were the block copolymers that were prepared from glycerol, glycolide, or lactide by means of a two-stage synthesis or coupling method. − …”

Section: Introductionmentioning

confidence: 99%

Full Biobased Polymeric Material from Plant Oil and Poly(lactic acid) with a Shape Memory Property

Tsujimoto

Uyama

2014

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

This article deals with the synthesis of biobased polymeric material with a shape memory property from epoxidized soybean oil (ESO) and poly(l-lactic acid) (PLLA). PolyESO/PLLAs were synthesized by an acid-catalyzed curing of ESO in the presence of PLLA. PLLA was scarcely reacted with ESO during the reaction and was dispersed in the ESO-based polymer network. The Young’s modulus and maximum tensile stress of the polyESO/PLLA increased as the PLLA content increased. On the other hand, the strain at break of the polyESO/PLLA was larger than that of the ESO homopolymer and neat PLLA. The polyESO/PLLA exhibited excellent shape memory-recovery behaviors, and the ability depended on the feed ratio of ESO and PLLA. Because the present materials are prepared from renewable resources by a simple preparation method, this study is highly significant to provide biobased intelligent materials.

show abstract

“…They were successful for functionalising nadic anhydride incorporated polyesters in an extremely efficient and well‐controlled manner 8 . Polymers containing anhydride group are drawing attention nowadays in the area of functional polymers due to the reactivity of anhydride groups and that they exhibit extensive applications in processing, separation, and so on 9,10 . Maleic anhydride‐modified polypropylene is the utmost significant, commercially functionalized PP polymer for its low cost, high activity, and good processability 11 .…”

Section: Introductionmentioning

confidence: 99%

Copolymerization of nadic anhydride with styrene: Reactivity ratios

Jeemol

Mathew

Nair

2021

Polymers for Advanced Techs

View full text Add to dashboard Cite

The free radical copolymerization of nadic anhydride (NA) and styrene (St) at 80°C has been investigated for the first time. The copolymerization was done in toluene using benzoyl peroxide as initiator. The monomer reactivity ratios were calculated from the copolymer composition (estimated from the acid value) by using Fineman–Ross, Kelen–Tüdös, and Extended Kelen–Tüdös methods. The reactivity ratios (rNA, = 0.34, rST = 0.84) implied a good copolymerizability for the monomer pair and existence of an azeotropic composition at fNA = 0.195. The unsaturation in nadic anhydride exhibited good copolymerizability despite the fact that the double bond is isolated and allylic in nature. The usual retardation by the allylic protons was not significantly felt in this case, as the allylic protons were located at a bridge head posing geometric restrictions for stabilization of the allylic free radicals. However, an increase in concentration of NA in the feed decreased the overall rate of copolymerization. Based on the reactivity ratio, the probability for formation of sequences of NA in its copolymer with styrene was computed for a few compositions.

show abstract

POSS-enhanced shape-memory copolymer of polynorbornene derivate and polycyclooctene through ring-opening metathesis polymerization

Cited by 18 publications

References 53 publications

Robust hybrid nanostructures comprising gold and thiol-functionalized polymer nanoparticles: facile preparation, diverse morphologies and unique properties

Robust hybrid nanostructures comprising gold and thiol-functionalized polymer nanoparticles: facile preparation, diverse morphologies and unique properties

Full Biobased Polymeric Material from Plant Oil and Poly(lactic acid) with a Shape Memory Property

Copolymerization of nadic anhydride with styrene: Reactivity ratios

Contact Info

Product

Resources

About