Synthesis of Methyl—substituted Phthalazinone—based Aromatic Poly（amide imide）s

A series of novel aromatic poly (amide imide)s containing phthalazinone moietics were prepared from 2-(4-aminophenyl)-4-[3-methyl-4-(4-aminophenoxy)-2,3-phthalazinone-1], a novel diamine 1 with our diimide-dicarboxylic acids by Yamazaki phosphorylation method with the inherent viscosity of 0.36-0.65 dL/g. These polymers had high glass transition temperatures above 300℃ and they lost 10% weight between 426-475℃ in N2. The structure of diamine 1 and the polymers was confirmed by IR,^1H NMR and MS. The obtained polymers were readily soluble in polar solvents such as NMP,m-cresol etc. and easily cast into tough,flexible films. The X-ray indicated that they are all amorphous.     

Synthesis and Characterization of Poly(ether imide)s Containing m-Methyl and Phthalazinone Moieties

Aromatic polyimides are distinguished for their excellent mechanical and thermal properties in many engineering fields1. However, aromatic polyimides are normally insoluble in common organic solvents, which restricts their applications in some fields. Many efforts have been taken to improve their solubility. Introducing bulky side groups and non-coplanar structure into polymers bone chains is a good way to obtain the polymers with excellent mechanical and thermal properties2. In this paper…     

Synthesis and Properties of Poly （aryl ether ketone） Copolymers Containing 2,7-Naphthalene Moieties

IntroductionPoly(aryl ether ketone)s are high performance en-gineering plastics with outstanding physical,chemical,thermal and mechanical properties and have been ap-plied to the aerospace industry,the electronic industry,the automobile industry,the petro…     

Synthesis and Thermal Crosslinking Behavior of Poly（aryl ether ketone）s Containing 1,4-Naphthalene Moieties

A new monomer, 1,4-bis(4-fluorobenzoyl) naphthalene (compound 2) was synthesized via a two-step reaction. 1,4-Naphthalenedicarboxylic acid chloride (compound 1) was prepared by using the acyl chlorization reaction of 1,4-naphthalenedicarboxylic acid with thionyl chloride. The Friedel-Crafts acylation of compound 1 with fluorobenzene afforded compound 2 in a 80% yield. The polycondensation of compound 2 with various bisphenols in tetramethylene sulfone(TMS) in the presence of excess potassium carbonate as a condensation reagent was carried out at 210℃ to quantitatively afford the corresponding poly(aryl ether ketone)s (compounds 3-8) containing 1,4-naphthalene moieties. Thermal analyses showed that the polymers have Tg values ranging from 496 to 500 K and are thermally stable in air with initial mass loss above 500℃. These novel polymers exhibited an excellent solubility in organic solvents including NMP, DMAc, and chloroform, etc. In addition, the glass transition temperatures of these polymers increased and the polymers became insoluble in chloroform after treated at 260℃, indicating the occurrence of a thermal crosslinking reaction.     

Synthesis and Characterization of Ion-exchange Sulfonated Poly （ether sulfone）

N,N'-Bis(3-hydroxyphenyl)-1,8,4,5-naphthalenetetracarboxylic bisimide was prepared from the reaction of 1,8,4,5-naphthalenetetrcarboxylic acid dianhydride and 2-aminophenol in N, N-dimethylformamide. Polymerization of this bisimide with 4,4'-difluorodiphenylsulfone and disodium 3,3'-disulfonate4,4'-difluorodiphenylsulfone gave ion-exchange sulfonated poly(ether sulfone). The structure of the title compound was characterized with 1H-NMR and its polymer was characterized with FT-IR.     

Synthesis, Characterization and Properties of Poly（aryl amides） Containing Methoxy Substituted Phthalazinone Moiety

A novel aromatic diamine, 1, 2-dihydro-2-（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2, 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL.g^-1. The structures of diamine and polymers obtained were confirmed by MS, PT-IR, WAXD and ^1H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 281-307℃ and good solubility in polar solvents.     

Synthesis and Properties of Polyetherketones Containing Sulfide and Phthalazinone

High molecular weight copoly(ether ketone)s (PEK) based on 4-(4-hydroxyphenyl)-1-phthalazinone (DHPZ)/4,4′-thiobisphenol (TBP)/4,4′-diflourodiphenylketone (DFK) were prepared by nucleophilic substitution polycondensation. The copolymers were characterized by FT- and ^1H-NMR. Thermal properties and solubility of copolymers were studied.     

Synthesis and Characterization of Fluorine-containing Poly（ether ether ketone）s

<正>Poly(ether ether ketone)s(PEEK) are a class of high performance engineering thermoplastics known for their excellent thermal,mechanical,and electrical properties.This class of advanced materials has currently received considerable attention for potential application in aerospace,electronics,automobile and     

Synthesis and Characterization of Poly（ether amide）s Containing Bisphthalazinone and Ether Linkages

A novel aromatic diacid, 4, 4′-bis[2-(4-carboxyphenyl)phthalazin- 1-one-4-yl]-bisphenyl ether III, containing bisphthalazinone and ether linkages was prepared from nucleophilic substitution of p-chlorobenzonitrile with the bisphenol-like monomer I, followed by alkaline hydrolysis of the intermediate dinitrile II. A series of poly(ether amide)s containing bisphthalazinone and ether linkages derived from diacid III and aromatic diamines were synthesized by one-step solution condensation polymerization using triphenyl phosphite and pyridine as condensing agents. Moreover, the properties of poly(ether amide)s including thermal stability,solubility and crystallinity were also studied.     

Synthesis and Properties of Novel Poly（amine ether）s

Using aromatic bis（4-bromophenyl） ether and various aromatic diamines as the monomers, a series of novel poly（amine ether）s （PAEs） have been synthesized via palladium-catalyzed aryl amination, which is the Hartwig-Buchwald polycondensation reaction. Their structures were characterized by means of elemental analysis, FT-IR, 1^H NMR and UV-Vis spectroscopy. The results show a good agreement with the proposed structures. Their general properties were studied by DSC and TG and it＇s obvious that they show high glass transition temperatures （Tg〉200 ℃）, good thermal stability with high decomposition temperatures （TD〉500℃） and excellent solubility. The mechanical behavior of these polymers suggested that they could be considered a new class of high-performance polymers.     

Synthesis and Crystal Structure of N-Phenylbis（ferrocenecarboxyl）imide

The ferrocenyl compound,N-phenylbis(ferrocenecarboxyl)imide (C28H23NO2Fe2,Mr=517.17),was synthesized and structurally characterized by means of X-ray single-crystal dif-fraction. It crystallizes in monoclinic,space group C2/c with a=21.374(14),b=10.430(7),c= 10.741(7) ,β=114.184(8)°,V=2184(2) 3,Z=4,Dc=1.573 g/cm3,F(000)=1064,μ(MoKα)= 1.355 mm–1,T=291(2) K,the final R=0.0548 and wR=0.1437 for 1524 observed reflections with I > 2σ(I). In this compound,the nitrogen atom links two ferrocenyl groups and one phenyl group forming a novel imido derivative.     

Synthesis of Poly（aryl ether ketone） Copolymers Containing Adamantyl-substituted Naphthalene Rings

1 Introduction High performance polymers have received con-siderable attention over the past decade owing to their increased demands as replacements for metals or     

Novel π-Conjugated Poly（Schiff base） Containing Thiazole and Tetrathiatetrahyd ropentalene Moieties

A new kind of π-conjugated heterocyclic poly(Schiff base) was firstly prepared by the condensation reaction between tetrathiatetrahydropentalene-type diketone and bithiazole-diamine in good yields. The polymers were characterized by VPO, FTIR and ^1H NMR spectroscopy. A large bathochromic shift was observed in UV-Vis spectra for these polymers due to the π-π* transition in the conjugated main chain. Brief examination indicated that the nitrogen-and sulfur-containing polymers exhibited an excellent chelating tendency to metal ions and the corresponding polymeric complexes would be expected to have potential in applications.     

Synthesis and Magnetic Properties of Polyamide Complex Containing Bithiazole Moieties

A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in DMSO. They were characterized through IR and elemental analysis. The preliminary magnetic properties of the complex PTA-Nd^3＋ was investigated, it was found that the material is a ferromagnet at low temperature.     

Synthesis and Magnetic Properties of Fe（Ⅱ） and Nd（Ⅲ） Complexes of Poly（N-2-thiazolylacrylamide）

N-2-Thiazolylacrylamide （NTA） was polymerized by a radical route to obtain the polymer in good yield. The polymer with a pendent heterocyclic group is soluble in common organic solvents, which allow to prepare the corresponding metal complexes with higher loads easily. FTIR, ^1H NMR, elemental analysis, and energy-dispersive X-Ray spectroscopy （EDX） were applied to characterize these materials. The magnetic behavior of Fe（Ⅱ） and Nd（Ⅲ） complexes of poly（N-2-thiazolylacrylamide） was examined by a PPMS-9T magnetometer, exhibiting the characteristics of a soft ferromagnet. It is found that the Nd（Ⅲ） complex has an extremely high relative saturation magnetization of 35 emu/g.     

Synthesis and Properties of Lactic Acid-based Cross-linked Poly（ester-amide）

Polylactide (PLA), made from agriculture products, was one of biodegradable polymers1,2. Owing to its characters, PLA and its copolymers have received great interest in industrial and medical applications3-6, such as drug delivery systems, sutures, artifi…     

Synthesis and Characterization of Samarium （Ⅲ） Containing Poly-（N-vinylacetamide） Complex

Poly (N-vinylacetamide) (PNVA) was synthesized by the free radical polymerization and its samarium (Ⅲ) binary complex was prepared and characterized by means of IR, UV-vis, X-ray photoelectron spectroscopy (XPS) and fluorescence spectra. The fluorescent intensity of samarium (Ⅲ) characteristic emission was increased significantly due to efficient energy transfer from polymeric ligand to Sm (Ⅲ) ion in the complex.     

Synthesis and Characterization of Poly (Ether Sulfone Ketone) Containing the Phthalazinone Moiety

IntroductionHeterocyclicpolymersareaclassofpolymersthatusuallyshowexcellentthermalstabilityandhavereceivedconsiderableattentionashigh-modulusplastics.Theycanbesynthesizedbythereactionofheterocyclichandesoractivatedarylhandeswithahis(phenolate)anioninanucleophilicdisplacementreaction.Manydifferenttypesofhightemperatureheterocyclicpolymers,suchaspoly(etherimide)s,poly(aryletherbenzoxazole)s,poly(etherketone)shavebeensynthesizedbythismethodl-3.Inthispaper,anovelpoly(ethersulfoneketone)withC-Nbon…     

The Synthesis and Characterization of High Molecular Weight Poly（phenylene sulfide/ether）

Poly(p-phenylene sulfide) (PPS) is a high performance engineering thermoplastic with high temperature resistance, good chemical resistance and mechanical properties. Since it was commercialized by Phillips Petroleum Company in 1973, it has been widely use…     

Synthesis and Characterization of Amphiphific Block Copolymer Containing PVP and Poly（5-benzyloxytrimethylene carbonate）

Amphiphilic copolymer of 5-benzyloxytrimethylene carbonate （BTMC） with poly （vinyl pyrrolidone） （PVP） was successfully synthesized using immobilized porcine pancreas lipase （IPPL） or SnOct2 as catalyst. Hydroxyl terminated PVP, synthesized with 2-mercaptoethanol as a chain transfer reagent, was employed as a rnacroinitiator. The resulting copolymers were characterized by GPC, ^1H NMR and IR. Increasing the BTMC/PVP-OH feed ratio （[B]/[P]） resulted in the increase of Mn of corresponding copolymers and the decrease of Mw/Mn. Immobilized enzyme has comparable catalytic activity to SnOct2 for the copolymerization.