Interpolymer association between random and graft acrylic copolymers with poly(ethylene imine): effects of copolymer structure

Chatterjee, S. K.; Misra, Neeti

doi:10.1016/s0032-3861(96)00850-6

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…The procedure chosen for calculations of the stability constant K s and degree of linkage θ of interpolymer complexes was the same as in earlier communications [17,32,[34][35][36]. The degree of linkage θ is defined as the ratio of the binding groups to the total number of potentially interacting groups [equation 1] and it is related to the stability constant K s of the interpolymer complex by the equation 2 The stability of these complexes in different media at higher temperature is likely to be influenced by the relative strength of H-bonds present in them.…”

Section: Resultsmentioning

confidence: 99%

“…this interpolymer complex [2,15,[34][35][36]39]. It is also known that hydrophobic interactions are reinforced with increasing temperature in an aqueous medium.…”

Section: Relationship Of Ln K S Versus 1/t For Complexation Systemsmentioning

confidence: 99%

“…The thermodynamic parameters [e.g. change in standard free energy (∆G 0 ), enthalpy (∆H 0 ) and entropy (∆S 0 )] can be calculated from the temperature dependence of the stability constant (K s ) using the thermodynamic equations [2,32,[34][35][36][37]:…”

Section: Relationship Of Ln K S Versus 1/t For Complexation Systemsmentioning

confidence: 99%

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Effect of ionic strength of the solution of some hydrogen - bonded interpolymer complexes on the stability and thermodynamic parameters

F.¹,

Rajabi²,

Ahmadi

et al. 2009

Polimery

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Effect of ionic strength of the solution of some hydrogen-bonded interpolymer complexes on the stability and thermodynamic parameters Summary-The effect of ionic strength of the solution on the complex formation of poly(acrylic acid) (PAA) with poly(vinyl pyrrolidone) (PVP) has been studied in aqueous solutions containing various inorganic salts (NaCl, KCl, NH 4 Cl). Stability constant (K s), degree of linkage (θ) and related thermodynamic parameters (∆G 0 , ∆H 0 and ∆S 0) have been compared for different complexation systems. The comparative study indicated considerable difference in the values of these parameters, which has been explained on the basis of relative strength of H-bond present in different systems.

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Section: Resultsmentioning

confidence: 99%

“…this interpolymer complex [2,15,[34][35][36]39]. It is also known that hydrophobic interactions are reinforced with increasing temperature in an aqueous medium.…”

Section: Relationship Of Ln K S Versus 1/t For Complexation Systemsmentioning

confidence: 99%

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Effect of ionic strength of the solution of some hydrogen - bonded interpolymer complexes on the stability and thermodynamic parameters

F.¹,

Rajabi²,

Ahmadi

et al. 2009

Polimery

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show abstract

“…Studies on intermacromolecular complexes formed between macromolecules with complementary binding sites have assumed considerable importance in the field of polymer science [1][2][3] . Intermolecular secondary binding forces such as electrostatic, hydrogen bonding and hydrophobic interactions have been attributed to the main driving force for interpolymer complexation 4) .…”

Section: Introductionmentioning

confidence: 99%

“…Using FTIR spectroscopy, Katime et al 6) demonstrated that the hydrogen binding distributions in vinyl alcohol/vinyl acetate copolymers strongly depend on the sequence distribution. Chatterjee et al 3) have studied the effects of copolymer structure during the interpolymer association between random and graft acrylic copolymers with poly(ethyleneimine).…”

Section: Introductionmentioning

confidence: 99%

Stability and thermodynamic parameters of interpolymer complexes of acrylamide/alkyl acrylate copolymers with poly(ethyleneimine): effects of microstructure and alkyl substituents of copolymers on interpolymer association

Chatterjee¹,

Mukherjee

Brar

1999

Macromol. Chem. Phys.

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SUMMARY: Acrylamide/ethyl acrylate (A/E) and acrylamide/butyl acrylate (A/B) copolymers of different compositions were prepared in solution by free radical polymerization. The copolymer compositions were determined from the nitrogen content in the copolymers. Interpolymer complexes of both A/E and A/B copolymers with polyethyleneimine (PEI) were prepared in DMF-water (80 : 20 v/v). The stability constants and related thermodynamic parameters (e. g., DG 0 , DH 0 and DS 0 ) of the interpolymer complexes were determined using Osada's method. These parameters were correlated with the sequence distribution of monomer units in the copolymer chains which were obtained from 13 C{ 1 H} NMR spectroscopy. The size of the alkyl group and the microstructure of the copolymers influence the association between the copolymer and PEI, which is reflected in the stability of the interpolymer complexes.

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Stability constants and thermodynamic parameters of some intermacromolecular complexes in relation to their specific interaction forces

2005

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Interpolymer association between random and graft acrylic copolymers with poly(ethylene imine): effects of copolymer structure

Cited by 6 publications

References 20 publications

Effect of ionic strength of the solution of some hydrogen - bonded interpolymer complexes on the stability and thermodynamic parameters

Effect of ionic strength of the solution of some hydrogen - bonded interpolymer complexes on the stability and thermodynamic parameters

Stability and thermodynamic parameters of interpolymer complexes of acrylamide/alkyl acrylate copolymers with poly(ethyleneimine): effects of microstructure and alkyl substituents of copolymers on interpolymer association

Stability constants and thermodynamic parameters of some intermacromolecular complexes in relation to their specific interaction forces

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