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Two polythiophenes with carboxylate side chains and vinylene linkers in conjugated backbones, i.e., poly[5,5′-(E)-bis(2-hexyldecyl)-2,2′-(ethene-1,2-diyl)bis(thiophene-3-carboxylate)-alt-5,5′- 2,2′-bithiophene] (PBT) and poly[5,5′-(E)-bis(2-hexyldecyl)-2,2′-(ethene-1,2-diyl) bis(thiophene-3-carboxylate)-alt-5,5′-thieno[3,2-b]thiophene] (PTT), were synthesized and characterized. Compared to poly(3-hexylthiophene)...
The prevalent way to enhance interface interaction of immiscible polymer blend is adding some low molecular weight compatibilizers with “soft” nature, unfortunately throwing negative effects on the final mechanical strength. Here, an interfacial interlocking design strategy for immiscible polypropylene (PP)/polyamide (PA) blend is proposed. The formation process involves aryl amide-based compounds...
We report radical coupling copolymerization (RCCP) of various pairs of in-situ formed benzyl-type biradicals derived from dibromides in the presence of Cu/ligand. The monomer sequence distributions and compositions of copolymers were measured by 1H NMR. RCCP can be employed to synthesize some new kinds of polymers, such as polyether, polysulfone and poly(substituted arylene), under mild condition...
We propose a strategy of combination of tailored synthesis and direct analysis of decrosslinked components of the network, which is applicable to quantitative characterization of polymer network. The well-defined polymer networks with cleavable branch units were synthesized by endlinking of 3-armed prepolymer. Via decrosslinking, cleavage at the branch units, the polymer network can be transformed...
Periodic polymers with different repeating sequences, such as [AX], [AAX] and [ABAX], were synthesized by radical addition-coupling polymerization (RACP) of bifunctional monomers with benzyl bromide/α-methyl benzyl bromide groups and 2-methyl-2-nitrosopropane in the presence of Cu(0)/ligand. By selection of proper ligand and polymerization condition, the defects derived from self-coupling of benzyl-type...
This paper describes the first example of alternating copolymerization of carbonyl sulfide (COS) with cyclohexene oxide (CHO) via heterogenous catalysis of a nano-lamellar zinc–cobalt(III) double metal cyanide complex (Zn–Co(III) DMCC), providing an efficient method for converting COS to poly(cyclohexene monothiocarbonate) (PCHMTC) with an alternating degree up to 93%. The number-average molecular...
This paper describes a convenient one-pot terpolymerization of CO 2 , cyclohexene oxide (CHO) and maleic anhydride (MAH) to afford a poly (ester-carbonate) with a low content of ether units (2.9–4.3 mol%) using a highly active Zn–Co(III) double metal cyanide complex (DMCC) catalyst. Terpolymerization was carried out in tetrahydrofuran (THF) at 75–90 °C and 1.0–4.0 MPa and no cyclic carbonate...
A linear amphiphilic multiblock copolymer (PNIPAm-PtBA-PNIPAm) m was successfully synthesized by a two-step reversible addition–fragmentation transfer (RAFT) polymerization in the presence of a cyclic trithiocarbonate as RAFT agent. The micelle behavior of (PNIPAm-PtBA-PNIPAm) m multiblock copolymer in aqueous solution was then investigated by means of normal TEM, cryo-TEM, static...
Polyethylene/montmorillonite (PE/MMT) nanocomposites with different dispersion states of MMT were prepared by in situ polymerization. Isothermal crystallization of the intercalated nanocomposite, in which the PE chains were confined in the MMT layers, was studied and was compared with that of the exfoliated nanocomposite. It is observed that the intercalated sample has longer induction period, longer...
In this paper, the poly(acrylonitrile-acrylamide-acrylic acid) [P(AN-AM-AA)]/poly(vinyl alcohol) (PVA) intermacromolecular complex formed through hydrogen bonding is described. The experimental results show that P(AN-AM-AA), which was prepared by hydrolysis of polyacrylonitrile followed by acidifying, complexes with PVA through hydrogen bonding, as verified by pH value testing and FTi.r. thermal analysis...
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