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In this article, C60 could be co-assembled into PB phase of the furan modified poly(styrene-b-butadiene-b-styrene) (SBS) via Diels-Alder (DA) reaction at the molecular level. The morphology of SBS could be effectively tailored by the incorporation of C60 and even small amount of C60 could lead to great change in the morphologies of SBS. Three types of morphologies of SBS could be observed as the content...
In this paper, the pristine carbon nanotubes (CNTs) could directly act as dienophile and furan modified polybutadiene elastomer could be used as macromolecular diene to take part in the formation of inorganic-organic network via Diels-Alder reaction, which was quite a convenient and original method. The success of the crosslinking reaction was assessed by swelling measurements and the chemical structure...
In this paper, we have synthesized crosslinked polymers that can be remolded, self-healing and degradable, which provide us more freedom on how to treat the crosslinked polymer after they are damaged or out of use. This type of crosslinked polymer is fabricated by dynamic bonding linkage based on Schiff base reaction between commercial available terephthalaldehyde (A2) and diamine (B2) using tri(2-aminoethyl)amine...
One of the limitations of electrospun collagen as bone-like fibrous structure is the potential collagen triple helix denaturation in the fibre state and the corresponding inadequate wet stability even after crosslinking. Here, we have demonstrated the feasibility of accomplishing wet-stable fibres by wet spinning and diacid-based crosslinking of collagen triple helices, whereby fibre ability to act...
In this paper, sulfonated graphene (SG) were incorporated into the poly (vinyl alcohol) (PVA) networks to fabricate the SG/PVA (SP) composite hydrogel. The as-prepared SP hydrogel exhibited enhanced mechanical property with a small amount of SG into the PVA matrix. In the meantime, the SP hydrogel showed specific adsorption of cationic dyes, such as Methylene Blue (MB), Malachite Green (MG). Studies...
Multiwalled carbon nanotubes (MWCNTs) have been widely used as reinforcement fillers in past decades. However, the reinforcement effect has been greatly hindered by the limited available interface area (AIA) with polymer matrices for polymer composites. Successively, the method of oxidative unzipping MWCNTs into graphene nanoribbons (GNRs) was demonstrated to be the effective way for addressing the...
Chemically-modified gum arabic with glycidyl methacrylate was used for liquid-phase direct exfoliation of graphite. Using this technique, glycidyl methacrylate-modified gum arabic-functionalized graphene flakes can be easily obtained by centrifugal separation after sonication. It was demonstrated by transmission electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy,...
In this paper, a series of benzophenone-based polybenzoxazine (PBD) was synthesized through the formation of oxazine rings, and the structures of the obtained polymers were confirmed by FTIR, 1 H NMR and UV–visible analysis. As the existence of benzophenone units in the main chain, PBD could initiate photopolymerization of various monomers. The photo-initiative behavior of PBD was tested by...
Soybean oil containing thioxanthone (TX) moieties and/or coinitiator DBA (ESO-ATX-DBA, ESO-ATX/ESO-DBA) were synthesized by grafting 2-acitic thioxanthone (ATX) and 4-(dimetheylamino) benzoic acid (DBA) to the backbone of epoxidized soybean oil (ESO). The obtained ESO-ATX-DBA, ESO-ATX and ESO-DBA were characterized by FT–IR, 1 H NMR and UV–vis spectra, and investigated as photoinitiators by...
In this paper, unzipped multiwalled carbon nanotube oxides (UMCNOs), obtained by oxidation unzipping multiwalled carbon nanotubes (MWNTs) were used as novel nanofillers for mechanical reinforcement of chitosan (CS) matrix. The UMCNOs/CS nanocomposite films with different amounts of UMCNOs were fabricated by solution-casting the mixtures of UMCNOs and CS acetic acid aqueous dispersions. The structures...
Kevlar oligomer functionalized graphene (FGS) was prepared by simple grafting of amino-terminated Kevlar oligomer on graphene oxide (GO) followed by reducing with hydrazine hydrate. The incorporation of FGS shows pronounced effect on the host polymers. High-level reinforcement of both PMMA and PI is observed with low content of FGS (≤0.2 wt %), in this lower loading range, the tensile modulus and...
Well-defined multi-stimuli responsive fluorinated graft poly(ether amine)s (fgPEAs) were synthesized through nucleophilic substitution/ring-opening reaction of commercial poly(propylene glycol) diglycidyl ether and Jeffamine L100, followed by functionalization of hydroxyl groups in backbone by fluorinated alkyl carboxylic acid. fgPEAs are comprised of hydrophilic short poly(ethylene oxide) (PEO) and...
Multi-stimuli responsive poly(ether amine) (PEA) was successfully grafted on the planar silicon through a convenient and efficient way via “thiol-ene” click chemistry. The whole process for fabrication of PEA brush was carefully traced by XPS, AFM, ellipsometer and water contact angle (WCA). The results indicated that PEA brushes with different thickness can be obtained through both photochemical...
Poly[2,2 ′ -(p-oxydiphenylene)-5,5 ′ -bibenzimidazole] (OPBI) nanocomposites containing 0.1–1wt% multi wall carbon nanotubes (MWNTs) have been synthesized via “one pot synthesis” which combines the in situ modification of MWNTs and in situ polymerization of OPBI in one reaction pot, a technique that is particularly suitable for large scale production. Raman spectroscopy, NMR, XPS and...
Amphipathic hyperbranched polymeric thioxanthone (TX) photoinitiators (AHPTXs) were synthesized by introducing TX, and polyethylene glycol monoethylether glycidyl ether (E-PEO), which contained short poly (ethylene oxide) (PEO) chain, into periphery of hyperbranched poly(ethylene imine) (HPEI), as well as low-molecular weight analogue 2-(2-hydroxy-3-(methyl(2,3,4,5,6-pentahydroxyhexyl)amino)propoxy)...
A novel amphipathic polymeric photointiator based on thioxanthone (TX) (APTX) containing coinitiator amine was synthesized by introducing TX, amine and short poly(ethylene oxide) (PEO) chain into the backbone of polymeric chain together. APTX can be not only dispersed easily in many solvents and acrylate monomers but also is soluble in water. In comparison to low-molecular weight analogues photoinitiators,...
A novel sulfonated polybenzimidazole, sulfonated poly[2,2′-(p-oxydiphenylene)-5,5′-bibenzimidazole] (SOPBI), was successfully prepared by post-sulfonation reaction of the parent polymer, poly[2,2′-(p-oxydiphenylene)-5,5′-bibenzimidazole] (OPBI), using concentrated and fuming sulfuric acid as the sulfonating reagent at 80°C, and the degree of sulfonation (DS) could be regulated by controlling the reaction...
As a continuation of the research on chemical-bonded photoinitiators comprising the structure of planar N-phenylmaleimide (NPMI) and benzophenone (BP), three novel polymerizable sulfur-containing photoinitiator MTPBP, CMTPBP and BMTPBP were synthesized by introducing NPMI group into benzophenone (BP). BP was selected as the reference to evaluate their photoefficiency. These novel photoinitiators possess...
A novel negative photoinitiator-free photosensitive polyimide (PFPS–PI) was synthesized through introducing the photosensitive 4,4-bis[(4-amino)thiophenyl] benzophenone (BATPB) into backbone chain and methyl acrylate group into side-chain of the polyimide, respectively. Photosensitive properties study revealed its good photolithographic properties, with a resolution about 5μm and a sensitivity of...
The hindered curing behavior of epoxy–phenol mixtures with the presence of 18MMT (modified by acidic primary octadecylamine) using triphenephosphine (TPP) as a catalyst was investigated by DSC. The mechanism proposed is based on the analysis of these obtained curing behaviors with DSC experiments by changing the components in the epoxy–phenol/18MMT blends. Due to the reaction between TPP and the active...
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