Infrared absorption characteristics and electrical conduction of methyl methacrylate‐lithium acrylate copolymers

Abstract

Semiconducting copolymer samples were prepared by bulk copolymerization of methyl methacrylate with lithium acrylate using benzoyl peroxide as initiator. The pattern of the chemical reaction is discussed. The obtained samples wcre found to he random copolymers. Infrared absorption spectra were measured and analysed according to the copolymer structures. The data of electrical conductivity and the effect of gamma radiation on the electrical conductivity of the copolynier samples are discussed. Infrarotspeklren und elektrische Leitfiihigkeit von Methylmethacrylat-Lithiumacrylat-CopolymerenDurch Substanzcopolymerisation von Methylmethacrylat und Lithiuniacrylat rnit Benzoylperoxid wurden halbleitende Copolymere synthetisiert. Ein Schema der chemischen Rcaktionen wird vorgeschlagen. Die erhaltenen Proben sind statistische Copolymere. Die Infrarotspektren wurden gemessen und im Hinblick auf die Struktur der Copolymere nnalysiert. Die gemessenen n'erte der elektrischen Leitfahigkeit urid der EinfluB von Gammabestrahlung auf die elektrische Leitfahigkeit der Copolymere werden diskutiert. MET-cneEmpba u anexmpuuec~ca~ npoeoaumoma conoawepoe AtemuaAemaPcpunama u aPcpunama a u m uEJIOYHO~~ cononm~epnaaq~eit MeTunMeTaKpmaTa H aKpmaTa JIATHJT, A H H q A A p o s a H H o i n e p e K H c b H ) 6 e~a o~n a , nony-Ctem noaynposonRqne cononmepbr. HpennaraeTcR cxeMa xtmwiecmx peaKqAir. IIonyqeHHbIe HK-cneKTpbI am-;Ilf3Y~yH)TCR OTHOCATeJIbHO CTPYKTYPbI COIIOnHMepOB. 06CYWfEAaH)TCR AaHHbIe H3MepeHHR WIeKTpHYeCHOfi IIpOBOAA-MOCTA A BJIHRHAe y-06nyqe~mfi H a EJJIeKTpWIeCKyIO IIPOBOAHMOCTb COnOJlAMepOB.

Synthesis and properties of interpenetrating networks from acrylates of d‐block elements

“…Zinc acrylate 1131, and chromium acrylate [14] were synthesized by the reported method. Solvents (Qualigens) and divinyl benzene (Merck) were used without further purification.AIBN was recrystallized in methanol (m.p.…”

Spectroscopic and electrical conductivity studies on methyl methacrylate‐nickel acrylate bulk copolymers

“…Materials, preparation of the copolymer samples, and resistivity measurements are the same as previously mentioned by SAYYAH et al [4]. The nickel content was determined by atomic absorption tcchnique using spectrophotometer S P 191.…”

Molecular weight studies of the γ‐irradiation degradation of poly(methyl methacrylate) doped with poly(p‐sulfanilamide)

“…17,[19][20][21][22] The effects of g irradiation on the electrical properties of some ac-rylate polymers were studied and dosimetric investigations were performed by Sayyah and coworkers. [23][24][25][26] The amount of quantitative data available in this field is limited. Because of the very small amount of reliable quantitative data published to date on this subject, it is not usually possible to reach definite conclusions about the basic mechanisms of crosslinking and degradation.…”