para-Substituted Poly(styrene peroxide)s: Synthesis, Characterization, Thermal Reactivities, and Chain Dynamics Studies in Solution

De, Priyadarsi; Sathyanarayana, D. N.

doi:10.1002/1521-3935(20020101)203:2<420::aid-macp420>3.0.co;2-z

Cited by 12 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5B), the E d value was found to be 36.2 kcal mol À1 , which compares well with the dissociation energy of the O-O bond in dialkyl peroxides 31 and polyperoxides. 32 The glasstransition temperature (T g ) of PAEMAP was measured as À24 C under nitrogen atmosphere at a heating rate of 10 C min À1 . The lower T g value of PAEMAP is due to the labile peroxy bonds (-O-O-) in the backbone.…”

Section: Thermal Degradation Study Using Dsc and Tgamentioning

confidence: 99%

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Thermal Degradation Study Using Dsc and Tgamentioning

confidence: 99%

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7][8][9][10][11] The obtained PP includes a labile O-O bond in their main chain, differing from common vinyl and diene polymers. We have previously reported that PP can be conveniently produced by the radical copolymerization of alkyl sorbates (1) with oxygen under mild polymerization conditions, that is, ambient pressure and temperature in the presence of a radical initiator.…”

Section: Introductionmentioning

confidence: 99%

“…Molecular oxygen, having a triplet electronic structure in the ground state, reacts with various kinds of unsaturated compounds, such as diene monomers, to provide polyperoxides ( PP ) consisting of both 1,2- and 1,4-repeating structures. − The obtained PP includes a labile O−O bond in their main chain, differing from common vinyl and diene polymers. We have previously reported that PP can be conveniently produced by the radical copolymerization of alkyl sorbates ( 1 ) with oxygen under mild polymerization conditions, that is, ambient pressure and temperature in the presence of a radical initiator .…”

Section: Introductionmentioning

confidence: 99%

Regiospecific Structure, Degradation, and Functionalization of Polyperoxides Prepared from Sorbic Acid Derivatives with Oxygen

et al. 2006

View full text Add to dashboard Cite

We have fabricated degradable polyperoxides (PP) consisting of well-controlled 5,4-repeating units using various sorbic acid derivatives and molecular oxygen by an alternating radical copolymerization process. The PP obtained from the sorbic esters decompose via a radical chain reaction mechanism, leading to the formation of controlled low-molecular-weight products. In contrast, PP from some amide derivatives include an irregular chain structure, resulting in a more complicated degradation behavior. The theoretical calculations account for the selectivity in the two-step regiospecific propagation depending on the monomer structure. We have demonstrated the synthesis of functional PP based on two methods: one is the copolymerization of functional diene monomers with oxygen, and the other is the polymer reaction of PP including an azide group with a functional alcohol.

show abstract

“…Vinyl polyperoxides are a unique class of polymers that pyrolyze exothermically,8 in contrast to other common polymers, which generally degrade endothermically. Studies on their heat of degradation have lead to the detection of new phenomena of autopyrolyzability and autocombustibility,9 which has made them candidates for specialized fuels of the future 8. The use of monomer mixtures and crosslinking agents is important for improving the quality of polymeric coatings and adhesives 10.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of copolyperoxides of indene with styrene, α‐methylstyrene, and α‐phenylstyrene

De¹,

Sathyanarayana²

2002

J Polym Sci B Polym Phys

Self Cite

View full text Add to dashboard Cite

The oxidative copolymerization of indene with styrene, ␣-methylstyrene, and ␣-phenylstyrene is investigated. Copolyperoxides of different compositions have been synthesized by the free-radical-initiated oxidative copolymerization of indene with vinyl monomers. The compositions of the copolyperoxides obtained from the 1 H and 13 C NMR spectra have been used to determine the reactivity ratios of the monomers. The reactivity ratios indicate that indene forms an ideal copolyperoxide with styrene and ␣-methylstyrene and alternating copolyperoxides with ␣-phenylstyrene. Thermal degradation studies via differential scanning calorimetry and electron-impact mass spectroscopy support the alternating peroxide units in the copolyperoxide chain. The activation energy for thermal degradation suggests that the degradation is dependent on the dissociation of the peroxide (OOOOO) bonds in the backbone of the copolyperoxide chain. Their flexibility has been examined in terms of the glass-transition temperature.

show abstract

para-Substituted Poly(styrene peroxide)s: Synthesis, Characterization, Thermal Reactivities, and Chain Dynamics Studies in Solution

Cited by 12 publications

References 23 publications

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

Regiospecific Structure, Degradation, and Functionalization of Polyperoxides Prepared from Sorbic Acid Derivatives with Oxygen

Synthesis and characterization of copolyperoxides of indene with styrene, α‐methylstyrene, and α‐phenylstyrene

Contact Info

Product

Resources

About