P(NIPAM-<italic>co</italic>-FPA) contains an aldehyde group and a phenolic ester moiety is synthesized. The can form reversible covalent bonds with hydrazide to endow the polymer gels self-healing properties. self-healable gel be degraded in Na₂CO₃ solution based on cleavage of bond.

ABSTRACT We synthesized a novel cage–ladder‐structure, phosphorus‐containing polyhedral oligomeric silsesquinoxane (CLEP–DOPO–POSS) via the hydrolytic condensation of 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO)–vinyl trimethoxysilane (VTMS) with 2‐(3,4‐epoxycyclohexyl) ethyl and then incorporated it into epoxy resins (EPs) in different ratios thermal curing technology. The structure CLEP–DOPO–POSS was confirmed by Fourier transform infrared spectroscopy, NMR spectroscopy ( 1...

In this investigation, a novel temperature-pH responsive copolymer was prepared by the radical copolymerization between 2-hydroxypropyl acrylate (HPA) and aminoethyl methacrylate hydrochloric salt (AMHS).The molecular structure of corresponding has been confirmed 1 H NMR FTIR measurements.The results indicated that lower critical solution temperature (LCST) resulting shown considerable dependence on monomer ratio pH value in medium.When molar HPA to AMHS unit polymer chain fixed at 1.56,...

Abstract A novel redox system, potassium diperiodatocuprate [Cu (III)–chitosan], was employed to initiate the graft copolymerization of methyl acrylate (MA) onto chitosan in alkali aqueous solution. The effects reaction variables such as monomer concentration, initiator pH and temperature were investigated. By means a series reactions, grafting conditions optimized. Cu (III)–chitosan system found be an efficient for this copolymerization. structures thermal stability chitosan‐ g‐ poly(methyl...

Abstract Summary: A soluble, regular, ethoxy‐capped, ladder poly(silsesquioxane) ( EtO‐LPOAS ) has been successfully synthesized by means of the concerted H‐bonding template silanol and amido groups, through a new monomer M : tetraethoxy disiloxane bisamide compound. was characterized X‐ray diffraction (XRD), 29 Si NMR spectroscopy DSC measurements. The results confirm presence structure . This synthetic method opened route to other kinds functional poly(silsesquioxane)s. Schematic overview...

Abstract In this study, a novel pH–temperature‐responsive copolymer was first synthesized by the radical copolymerization between HPA (2‐hydroxypropyl acrylate and 2‐hydroxyisopropyl acrylate) AMHS (aminoethyl methacrylate hydrochloric salt). The molecular structure of corresponding has been confirmed 1 H‐NMR FTIR. lower critical solution temperature resulting exhibited considerable dependence upon ratio monomers pH value in medium. On basis copolymer, hydrogel as drug release carrier...

A new thermosensitive poly( N ‐propionyl‐aspartic acid/ethylene glycol) (PPAE) with no cytotoxicity and an upper critical solution temperature (UCST) is synthesized by polycondensation of l ‐aspartic acid ethylene glycol. The chemical structures the monomer polymer are confirmed FTIR 1 H NMR spectroscopy, elemental analysis measurements. Turbidimetric measurements indicate that PPAE shows a reversible UCST phase transition at 1.5–37.6 °C in pure water or alcohol/water mixture. can be...

Abstract In this study, a novel thermo‐sensitive poly( N ‐acryloylglycinates) was prepared in order to get potential drug release carrier. The corresponding monomers and the polymers were characterized with Fourier‐transform infrared (FTIR) 1 H NMR. thermo‐sensitivity of evaluated by measuring their lower critical solution temperatures (LCST) water, inorganic salt solution, different pH solutions. results indicated that ‐acryloylglycine methyl ester) (NAGME) ethyl (NAGEE) exhibit reversible...

Abstract Using potassium diperiodatonickelate (Ni (IV)) as an efficient initiator, the graft copolymerization of methyl acrylate (MA) onto organophilic montmorillonite (OMMT) was successfully performed in alkaline medium. Three grafting parameters were systematically evaluated functions temperature, initiator concentration, reaction time, pH value, and ratio MA to OMMT substrate. The structure titled copolymers (OMMT‐ g ‐PMA) confirmed by Fourier transform infrared spectroscopy (FTIR), X‐ray...

Abstract A pH/temperature and degradable‐responsive hydrogel (PSMEA) was prepared from chitosan (CS), N ‐acryloylglycine methyl ester (NAGME), ethyl (NAGEE), acrylic acid (AA), ‐methylenebisacrylamide (NMBA). The swelling properties of PSMEA were systematically investigated at different temperatures, pH, CS contents. It found that the demonstrated obvious pH temperature‐responsive natures. caffeine‐release behaviors showed only 42.9% caffeine released PSEMA in 2.1 phosphate buffer solution...

Abstract A series of multifunctionalized polyamides were facilely prepared by Ugi four‐component polymerization (Ugi‐4CP) in one‐pot method at room temperature using several diacids, aldehydes, 1,4 bis‐( 3 ‐aminopropyl) piperazine and tert ‐butyl isocyanide as monomers. The simple combination monomers Ugi‐4CP led to formation nine thermosensitive water, their lower critical solution temperatures (LCSTs) range 13.1‐70.1°C. LCSTs for the subsequently‐quaternized (PBA‐800‐Br, PIA‐800‐Br...

The continuous use of nonsteroidal anti-inflammatory drugs such as ibuprofen frequently leads to some serious side-effects including stomach ulcers and bleeding. In this paper, two kinds new biocompatible polyesters (PIGB, PIGH) polyester-amide (PIGA) comprising biodegradable components ( L -glutamic acid, 1,4 -butanediol, 1,6 -hexanediol 6 -amino hexanol) pendant group have been prepared by the melting polycondensation. chemical structures monomer polymers are characterized FTIR, 1 H NMR...

The non‐toxicity or good biocompatibility is an inevitable requirement for thermosensitive polymers because of their extensive biomedical applications. In this investigation, a facile and instructional guidance developed the molecular design polymeric material. A family poly(lysine ester‐diacetoxy tartaric acid)s (PLEDT) with then designed successfully prepared on basis natural lysine acid. structure monomers systematically confirmed by Fourier transfrom IR (FTIR) spectroscopy, 1 H NMR,...

A novel redox system, potassium diperiodatocuprate(III) [Cu (III)]-poly(vinyl alcohol) (PVA) was employed to initiate the graft copolymerization of methyl acrylate (MA) onto PVA in alkaline medium. The grafting parameters varied with concentrations monomer, initiator, macromolecular backbone (DP=1750, M=80 000) and temperature. formation copolymer confirmed by Fourier transfer infrared spectroscopy (IR), scanning electron microscope (SEM), X-ray diffraction thermogravimetric analysis (TGA)....

Abstract The graft copolymerization of methyl methacrylate (MMA) onto starch with potassium ditelluratocuprate(III) (DTC)–starch redox system as initiator was studied in alkaline medium. grafting parameters have been determined a function temperature, ratio monomer to starch, concentration, and pH. structure the copolymers confirmed by Fourier transform infrared spectroscopy (FTIR), x‐ray diffraction, scanning electron microscope (SEM). thermal stability starch‐g‐PMMA were characterized...

Abstract Block copolymers of methyl acrylate (MA) and poly(ethylene glycol) (PEG) have been obtained using a novel redox system—potassium diperiodatocuprate(III)[DPC]/PEG system in alkaline aqueous medium. with high percentage blocking were obtained, which indicated that the DPC/PEG was an efficient initiator for this blocking. Effects different conditions (concentration reactants, temperature, concentration DPC, reaction time) on total conversion, blocking, intrinsic viscosity examined. The...

ABSTRACT In this investigation, a group of poly( l ‐malic acid acetate‐ co ‐ ‐lysine ester)s (PMALs) with excellent thermo‐sensitivity and non‐cytotoxicity were prepared by an optimized synthetic route from natural ‐lysine. The structure properties PMALs including monomers systematically characterized FTIR, 1 H NMR, UV, gel permeation chromatograph, scanning electron microscope, contact angle measurement, cell counting kit assess (CCK‐8), confocal laser microscopy (CLSM). Three show...

Front Cover: In article number 2100284 by Kuilin Deng and co-workers, AIE-active polydihydropyrimidones (PDPMDs) can be facilely synthesized Biginelli reaction through introducing dihydropyrimidone rings onto non-AIE-active polyureas chains. The enhanced fluorescence of PDPMDs is actually regulated the intramolecular “aggregation” based on cluster triggering emission mechanism.