Synthesis and Characterization of Thermoplastic Poly (ether-imide) Elastormer Based on Di-(4-Aminopheny)Methane-Pyromellitimide Unit

2013 ◽  
Vol 423-426 ◽  
pp. 498-502
Author(s):  
Jiao Jiao Shang ◽  
Ming Lei ◽  
Shao Jian Lin ◽  
Jian Wu Lan ◽  
Xia Huang ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Ir Spectra ◽  
Chemical Resistance ◽  
Pyromellitic Dianhydride ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
Solubility Behavior ◽  
Ft Ir

Novel polymers with imide and ether were synthesized by pyromellitic dianhydride and Pyromellitic dianhydride (PMDA), 4,4'-metylenedianiline (MDA), amino-teminated polyoxypropylene (D2000). The structures and thermostability of polymer were characterized through FT-IR spectra, thermogravimetric analysis (TGA) and differental scanning calorimetry (DSC), solubility behavior was determined via seven solvents. The results indicate that these polymers have good chemical resistance and exhibit excellent thermostability owing to the introduction of imide units.

scholarly journals Synthesis and Characterization of Some Novel Oxazine, Thiazine and Pyrazol Derivatives

2016 ◽  
Vol 13 (2) ◽  
pp. 244-252
Author(s):  
Baghdad Science Journal
Keyword(s):  
Acetic Acid ◽  
Ir Spectra ◽  
Glacial Acetic Acid ◽  
Basic Medium ◽  
Synthesis And Characterization ◽  
Pyrazole Derivatives ◽  
Phenyl Hydrazine ◽  
H Nmr ◽  
Ft Ir

In this paper, some chalcone derivatives (C1, C2) were synthesized based on the reaction of equal amount of substituted acetophenone and substituted banzaldehyde in basic medium. Oxazine and thiazine derivatives were prepared from the reaction of chalcones (C1-C2) with urea and thiourea respectively in a basic medium. Pyrazole derivatives were prepared based on the reaction of chalcones with hydrazine mono hydrate or phenyl hydrazine in the presence of glacial acetic acid as a catalyst. The new synthesized compounds were identified using various physical techniques like1 H-NMR and FT-IR spectra.

Synthesis and characterization of novel tetrakis (3-hydroxypropylmercapto)-substituted phthalocyanines

2013 ◽  
Vol 17 (06n07) ◽  
pp. 573-586 ◽  
Author(s):  
Çiğdem Yağcı ◽  
Ahmet Bilgin
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Properties ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Scanning Calorimetry ◽  
Metal Free ◽  
Visible Spectra ◽  
Ft Ir ◽  
Aromatic Nitro

A phthalonitrile precursor 4-(3-hydroxypropylmercapto)phthalonitrile (3) was synthesized via a base-catalyzed nucleophilic aromatic nitro displacement of 4-nitrophthalonitrile with the 3-mercapto-1-propanol. A novel tetrasubstituted metal-free phthalocyanine (4) ( M = 2 H ) and its metal complexes (5–8) ( M = Zn , Ni , Cu and Co ) bearing 3-hydroxypropylmercapto moieties were prepared by the cyclotetramerization reaction of (3) with the appropriate materials. The visible spectra of the zinc(II) phthalocyanine (5) was recorded with different concentrations and different ions as Ag +, Hg 2+ and Pb 2+ in DMF and also with different solvents as dimethylformamide and pyridine. Fluorescence spectrum of the compound (5) was also studied. Temperature and frequency dependence of AC conductivity for (4–8) was investigated in air and under vacuum and were found to be ~10-8–10-5 S.m-1. Thermal properties of the phthalocyanines were examined by differential scanning calorimetry. All the novel compounds have been characterized by elemental analysis, UV-vis, FT-IR, NMR and MS spectral data and DSC techniques.

Synthesis and Characterization of Polyaniline Copolymer

2012 ◽  
Vol 217-219 ◽  
pp. 551-554
Author(s):  
Ting Xi Li ◽  
Yu Hua Zhao ◽  
Qian Li ◽  
Cheng Qian Yuan ◽  
Quan Liang Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
The Difference ◽  
Thermal Stability Of

Abstract. Polyaniline (PANI) and p-phenylenediamine (p-PDA)-aniline copolymer were prepared via a same microemulsion method. The structures of the PANI and p-PDA-aniline copolymer were characterized by infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis（TGA）. The results revealed the difference of synthesis and characterization between PANI and p-PDA-aniline copolymer. It was shown that structure of the copolymer is almost similar to that of PANI, but the p-PDA-aniline copolymer has a better crystallization than PANI, and the thermal stability of the copolymer is higher than that of pure PANI.

Synthesis and Characterization of Triethanolamine Borate

2013 ◽  
Vol 709 ◽  
pp. 28-31
Author(s):  
Cheng Xue Wang ◽  
Tian Tian Liang ◽  
Chun Qiao Wei
Keyword(s):  
Mass Spectrometry ◽  
Differential Scanning Calorimetry ◽  
Synthesis And Characterization ◽  
Spectroscopy Analysis ◽  
Scanning Calorimetry ◽  
Reaction Conditions ◽  
Different Types ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Starting with boric acid and triethanolamine , the effect of the different types of the water-carrying agent on the yield was invested, and influences of dosage of water-carrying agent ,the mole ratio of reactants, reaction time on yield were discussed, the optimized reaction conditions were confirmed. The structure of the product was described by Fourier transform-infrared (FT-IR) spectroscopy, NMR Spectroscopy analysis, mass spectrometry (MS) and thermodynamic properties was analyzed by differential scanning calorimetry (DSC) and thermogravimetry (TG).

scholarly journals Synthesis and characterization of linear and crosslinked polymers with the addition of DMSPS

2019 ◽  
Vol 73 (1) ◽  
pp. 1
Author(s):  
Karolina Fila ◽  
Beata Podkościelna
Keyword(s):  
Spectroscopic Analysis ◽  
Bulk Polymerization ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
Chemical Structures ◽  
Hardness Tests ◽  
Ft Ir ◽  
The Impact ◽  
Sulfur Containing

<p>The aim of this research was the synthesis of polymers with the addition of S,S'-thiodi-4,1-phenylene bis(thiomethacrylate) (DMSPS) by bulk polymerization. Styrene (St), divinylbenzene (DVB) and ethylene glycol dimethacrylate (EGDMA) were used for the copolymerization as main monomers. The chemical structures of sulfur-containing polymers were confirmed by the spectroscopic analysis (ATR/FT-IR). In order to determine the impact of the sulfur derivative (DMSPS) addition on thermal properties of the obtained copolymers, differential scanning calorimetry (DSC) was performed. The hardness tests of the obtained copolymers were also applied using a Shore durometer.</p>

SYNTHESIS AND CHARACTERIZATION OF THIOPHENE-CONTAINING CHROMOPHORES FOR NONLINEAR OPTICAL (NLO) MATERIALS

2008 ◽  
Vol 17 (03) ◽  
pp. 243-254 ◽  
Author(s):  
ZUOSEN SHI ◽  
XIAOLONG ZHANG ◽  
ZHANCHEN CUI
Keyword(s):  
Absorption Maximum ◽  
Nonlinear Optical ◽  
Synthesis And Characterization ◽  
Knoevenagel Reaction ◽  
Scanning Calorimetry ◽  
Visible Spectra ◽  
Nlo Materials ◽  
Ft Ir ◽  
Uv Visible

A series of chromophores based on benzene and thiophene moieties as π-conjugating spacers were designed and synthesized by Horner-Emmons-Wadsworth reaction and Vilsmeier-Haack reaction, followed by Knoevenagel reaction with different electron acceptors. Their structures were confirmed by 1HNMR, FT-IR, HPLC-Ms, UV-visible spectra, and the thermal properties were characterized by differential scanning calorimetry (DSC). Solvatochromic method was used to measure their nonlinear optical properties. The variation of chromophoric structures on NLO properties was investigated, indicating that the cyano substitution on the vinylene bridge of the chromophore produces a considerable red-shift of the absorption maximum, and would greatly enhance the molecular quadratic hyperpolarizability (βμ).

Synthesis and Characterization of New Kinds Sulfoxide Extractants for Palladium(II)

2011 ◽  
Vol 287-290 ◽  
pp. 1841-1846
Author(s):  
Li Li Chen ◽  
Zu Min Qiu ◽  
Zhen Zhong Huang ◽  
Yan Fen Wu
Keyword(s):  
Oxygen Atom ◽  
Ir Spectra ◽  
Coordination Number ◽  
Elemental Analysis ◽  
Ethyl Ether ◽  
Analytical Data ◽  
Synthesis And Characterization ◽  
Ft Ir ◽  
Extraction Parameters

Three new extractants for palladium(II) extraction: bis(noctyl-Sulfinyl-ethyl) ether(L1), bis(isooctyl-Sulfinyl-ethyl)ether(L2), bis(isooctyl-Sulfinyl-ethoxy)ethane(L3) were synthesized. Micro-analytical data, elemental analysis, 1HNMR and IR-spectra were used to confirm the structures. Based on independent extraction experiments of Pd(II) , the extraction parameters of Pd(II) were studied in detail, and the optimal extraction parameters were obtained and summarized as the following: H+ concentration of aqueous phase 1.0-1.5 mo1·L-1, sulfoxide extractants concentration 0.01-0.1 mo1·L-1. The order of the extractability of the three extractants towards palladium(II) was L2>L3>L1. The coordination number was studied by the slope method. The results indicated that, in low acidity, the coordination number for extracting palladium (II) was 1.0 with all three extractants, while it was 2.0 in high acidity. FT-IR spectra was used to analyze the structure of the complex. Palladium (II) was coordinated with the oxygen atom in S=O group of the three extractants. and palladium (II) may also coordinated with the oxygen atom in C-O-C group of extractant L1, L2.

Synthesis and Characterization of Novel Triphenylene Derivatives Having Carboxylic Acid Groups at the Peripheral Chains

2010 ◽  
Vol 428-429 ◽  
pp. 83-89
Author(s):  
Zhong Xiao Li ◽  
Wei Wei ◽  
Wu Kun Fan ◽  
Jia Ling Pu
Keyword(s):  
Electronic Absorption Spectra ◽  
Synthesis And Characterization ◽  
Carboxyl Groups ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
Carboxylic Acid Groups ◽  
The Core ◽  
Thermal Gravimetry ◽  
Ft Ir

A new kind of triphenylene derivative sym-(OC3H6OCOC2H4COOH)6 with triphenylene at the core and carboxyl groups at the peripheral chains was synthesized and characterized by FT-IR and 1H-NMR. Thermal gravimetry analysis (TGA) and differential scanning calorimetry (DSC) showed that these compounds have a good thermal stability, which is dependent on the flexibility and interaction of the peripheral chains. Red shifts in electronic absorption spectra of the compounds were found in solution with increasing concentration.

Synthesis and Characterization of Novel Thermal Stability Poly (ester-imide-ether) with Excellent Lower Temperature Elastic Recovery

2012 ◽  
Vol 554-556 ◽  
pp. 258-262
Author(s):  
Jiao Jiao Shang ◽  
Jian Wu Lan ◽  
Shao Jian Lin ◽  
Si Chen ◽  
Ya Ni Li
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Elastic Recovery ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
Excellent Thermal Stability ◽  
Melt Polymerization ◽  
Ft Ir ◽  
Lower Temperature

A new poly(ester-imide-ether) (PEIE) was prepared by melt polymerization from 1,4-butanediol(BD), polytetrahydrofuran diol (PTMG) and a novel imide dicarboxylic acid monomer which was synthesized from 3,3',4,4'-biphenyltetracarboxylic di-anhydride(BPDA) and glycine acid(GLY). The structure, thermal behaviour and elastic recovery of polymer were characterized by FT-IR. thermogravimetric analysis (TGA), differential scanning calorimetry thermograms (DSC) and laboratory stretching machine. The results showed this polymer has excellent thermal stability, 5 % weight loss temperature was at 354°C. Meanwhile, the DSC curve showed that glass-transition temperature and crystallization temperature of the polymer were at -30 °C and 160 °C, respectively. The excellent elastic recovery was still displayed at low temperature.

Synthesis and Characterization of Hydrophobic Modification Guar Gum

2014 ◽  
Vol 952 ◽  
pp. 121-124 ◽  
Author(s):  
Feng Chen ◽  
Xu Guang Wang ◽  
Ren Shu Yang
Keyword(s):  
Aqueous Solution ◽  
Ir Spectra ◽  
Apparent Viscosity ◽  
Guar Gum ◽  
Synthesis And Characterization ◽  
Hydrophobic Modification ◽  
Ft Ir ◽  
Long Chain

The HMG GG-C14 was prepared by pre-swelling guar gum hydrophobic modification in alcohol-aqueous solution, the optical reactive condition was determined by studying the respective influence of each condition on the performance of the resultant product, and the final product possessed an apparent viscosity of 19957mPa·s (the apparent viscosity of parent guar gum is 11764mPa·s) and a substituting degree of 0.93%. The Ft-IR spectra of GG and GG-C14 indicate the hydrophobic long chain alkyl was successfully grafted onto guar gum.

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