Synthesis and characterization of new soluble polyesters derived from various cardo bisphenols by solution polycondensation

Liaw, Der‐Jang; Liaw, Been‐Yang; Hsu, Jun-Jang; Cheng, Ying-Chi

doi:10.1002/1099-0518(20001215)38:24<4451::aid-pola140>3.0.co;2-q

Cited by 42 publications

(40 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low magnitudes of [g] indicated moderately low molecular weight of the PESAC and it is further supported by GPC data ( [3][4][5]18] . Thus IR, viscosity and GPC data supported formation of moderately high molecular weight polymer.…”

Section: Viscosity and Molecular Weights Of Pesacsupporting

confidence: 63%

“…Aromatic polymers containing cardo groups (Latin meaning loops) [3][4][5] impart excellent thermal stability, excellent thermomechanical, electrical properties [6,7] and easy processibility. Rigid chain polymers are difficult to process because of their limited solubility and high glass transition temperatures, but this property can be improved either by copolymerization or introduction of cardo groups in the main backbone chains.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and Physicochemical Study of High-Performance Ether-Sulfonate Copolymer

Matariya

Parsania

2011

Polymer-Plastics Technology and Engineering

View full text Add to dashboard Cite

Ether-sulfonate copolymer of 1,1 0 -bis(4-hydroxyphenyl) cyclohexane, bisphenol-A and 4,4 0 -disulfonyl chloride diphenyl ether [PESAC] has been synthesized and characterized by IR, 1 H NMR, viscosity ([g] ¼ 0.23-0.25 gdl À1 ), density (1.3172 g/cm 3 ), tensile strength (11.8 MPa), electric strength (64 kV/mm), volume resistivity (4.24 Â 10 14 X cm) and dielectric constant (1.0). PESAC possesses excellent solubility, good hydrolytic stability against water, acids, alkalis and salt, high T g (170 C) and high thermal stability (290 C). The associated kinetic parameters namely energy of activation E (386.6 kJ mol À1 ), order of the reaction n (3.1), frequency factor A (1.53 Â 10 31 s À1 ) and entropy change DS Ã (346.1 kJ mol À1 ) have been determined and discussed.

show abstract

Section: Viscosity and Molecular Weights Of Pesacsupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Synthesis and Physicochemical Study of High-Performance Ether-Sulfonate Copolymer

Matariya

Parsania

2011

Polymer-Plastics Technology and Engineering

View full text Add to dashboard Cite

show abstract

“…All polymers were soluble in various aprotic polar solvents such as DMSO, DMF, NMP, and THF. The good solubility of these polymers may be elucidated by loose packing of the macromolecules because of pendent phenyl rings and low crystallinity (16). In common organic solvents and halogenated hydrocarbons, the polymers IV a,b,c and V a,b were partly soluble (except polymer IV d , and V c,d are soluble) which may be attributed to the presence of four or eight methylene groups, with the rigid benzene position of the main chain causing an increase in solubility.…”

Section: New Polymer Syntheses III 221mentioning

confidence: 99%

Synthesis and Characterization of New Unsaturated Polyesters Containing 4‐Phenylcyclohexanone Moiety in the Main Chain

Alkskas

Esbata

2008

Journal of Macromolecular Science, Part A

View full text Add to dashboard Cite

Two series of new unsaturated polyesters were prepared from 2,6-bis(p-hydroxidebenzylidene)-4-phenylcyclohexanone (I) and 2,6-divanillyidene-4-phenylcyclohexanone (II) with adipoyl, isophthaloyl, sebacoyl and terephthaloyl dichlorides utilizing the interfacial polycondensation technique at ambient temperature. In addition to that, the model compounds were synthesized by reacting (I) and (II) with benzoyl chloride. The model compound and polyester samples have been characterized by elemental and spectral analyses. The unsaturated polyesters have inherent viscosities of 0.96 -1.63 dl/g. All the polyesters are amorphous and most of them are partially soluble in most common organic solvents, but easily soluble in concentrated sulfuric acid. Their glass transition temperatures (T g ) range from190.15 to 245.288C, and the temperatures of 10% weight loss as high as 180 to 2208C in air, indicating that these aromatic polyesters have high T g and excellent thermal stability.

show abstract

“…[1,2] The poor solubilities in common organic solvents, coupled with high melting (Tm) and glass transition temperature (Tg) results in poor processability [3,4] which results from the presence of strong interchain interactions from symmetrical and polar groups. To surmount this, it is desirable to incorporate structural features in the polyester backbone to obtain greater degree of solubility and improved processing characteristics without compromising their desirable characteristics.…”

Section: Introductionmentioning

confidence: 99%

Processable aromatic polyesters based on bisphenol derived from cashew nut shell liquid: synthesis and characterization

et al. 2014

View full text Add to dashboard Cite

A new bisphenol viz., 4-(4-hydroxyphenoxy)-3-pentadecylphenol (HPPDP) was synthesized starting from cashew nut shell liquid (CNSL). Aromatic (co)polyesters containing ether linkages in the main chain and pendent pentadecyl chains were synthesized by the interfacial polycondensation of HPPDP with terephthalic acid chloride (TPC), isophthalic acid chloride (IPC) and a mixture of TPC and IPC (50:50 mol %) and by polycondenation of varying composition of HPPDP and bisphenol-A (BPA) with TPC. The resultant (co)polyesters exhibited inherent viscosities in the range 0.70-1.21 dL g −1 and number-average molecular weights in the range 16,000-48,200 (GPC, polystyrene standard). Polyesters were soluble in common organic solvents such as chloroform and dichloromethane and could be cast into films from chloroform solution. Polyesters exhibited T 10 values in the range 430-455°C and Tg values were in the range 29-202°C. Dynamic mechanical storage modulus and maximum on transition of tan δ curve decreased with increased content of HPPDP in copolyesters. Importantly, the large difference between Tg and T 10 values offers the possibility to process these polyesters in the melt.

show abstract

Synthesis and characterization of new soluble polyesters derived from various cardo bisphenols by solution polycondensation

Cited by 42 publications

References 29 publications

Synthesis and Physicochemical Study of High-Performance Ether-Sulfonate Copolymer

Synthesis and Physicochemical Study of High-Performance Ether-Sulfonate Copolymer

Synthesis and Characterization of New Unsaturated Polyesters Containing 4‐Phenylcyclohexanone Moiety in the Main Chain

Processable aromatic polyesters based on bisphenol derived from cashew nut shell liquid: synthesis and characterization

Contact Info

Product

Resources

About