Properties of blends of polycarbonate and polypropylene (I): Crystallization behavior

Y. S. Chun, H. S. Lee, T. S. Oh, Woo Nyon Kim

Research output: Contribution to journalArticle

Abstract

Blends of polycarbonate (PC) and polypropylene (PP) have been investigated by differential scanning calorimetry and polarized-light microscopy. From the measured melting temperature (Tm) of the PC-PP blends, it appears that the values of Tm of PP in the blends are shown to almost unchanged compare to that of the unblended PP. In the PC-PP blends, double crystallization peak are observed at about 80 °C and 100 °C when the PP becomes dispersed phase. This result indicates that the nucleation of PP in the PC-PP blends is divided into two parts: heterogeneous nucleation and homogeneous nucleation. For the blends of PC and PP with styrene-ethylene-butylene-styrene triblock copolymer (SEBS), the SEBS acts as a heterogeneous nucleating agent, thus a single crystallization peak is observed at about 100 °C. In the study of morphology of PC-rich composition, it was found that the spherulite size was decreased when the crystallization temperature was about 80 °C compare to the crystallization temperature was about 100 °C. This result is consistent with the double crystallization behavior of PP. From the above results, it is suggested that the nucleation of PP in the PC-rich composition is divided into two parts with the type of the dispersion and the size of the dispersed phase. From the measured crystallization temperature of PP in the blends, the interfacial free energy between the heterogeneous nuclei and the PP of the blends.

Original languageEnglish
Pages (from-to)1071-1079
Number of pages9
JournalPolymer (Korea)
Volume20
Issue number6
Publication statusPublished - 1996 Dec 1

Fingerprint

polycarbonate
Polypropylenes
Polycarbonates
Crystallization
Styrene
Nucleation
Block copolymers
Ethylene

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Properties of blends of polycarbonate and polypropylene (I) : Crystallization behavior. / Chun, Y. S.; Lee, H. S.; Oh, T. S.; Kim, Woo Nyon.

In: Polymer (Korea), Vol. 20, No. 6, 01.12.1996, p. 1071-1079.

Research output: Contribution to journalArticle

Chun, Y. S. ; Lee, H. S. ; Oh, T. S. ; Kim, Woo Nyon. / Properties of blends of polycarbonate and polypropylene (I) : Crystallization behavior. In: Polymer (Korea). 1996 ; Vol. 20, No. 6. pp. 1071-1079.
@article{bb518a7b94ae44bea30dbe53ee1c2b73,
title = "Properties of blends of polycarbonate and polypropylene (I): Crystallization behavior",
abstract = "Blends of polycarbonate (PC) and polypropylene (PP) have been investigated by differential scanning calorimetry and polarized-light microscopy. From the measured melting temperature (Tm) of the PC-PP blends, it appears that the values of Tm of PP in the blends are shown to almost unchanged compare to that of the unblended PP. In the PC-PP blends, double crystallization peak are observed at about 80 °C and 100 °C when the PP becomes dispersed phase. This result indicates that the nucleation of PP in the PC-PP blends is divided into two parts: heterogeneous nucleation and homogeneous nucleation. For the blends of PC and PP with styrene-ethylene-butylene-styrene triblock copolymer (SEBS), the SEBS acts as a heterogeneous nucleating agent, thus a single crystallization peak is observed at about 100 °C. In the study of morphology of PC-rich composition, it was found that the spherulite size was decreased when the crystallization temperature was about 80 °C compare to the crystallization temperature was about 100 °C. This result is consistent with the double crystallization behavior of PP. From the above results, it is suggested that the nucleation of PP in the PC-rich composition is divided into two parts with the type of the dispersion and the size of the dispersed phase. From the measured crystallization temperature of PP in the blends, the interfacial free energy between the heterogeneous nuclei and the PP of the blends.",
author = "Chun, {Y. S.} and Lee, {H. S.} and Oh, {T. S.} and Kim, {Woo Nyon}",
year = "1996",
month = "12",
day = "1",
language = "English",
volume = "20",
pages = "1071--1079",
journal = "Polymer (Korea)",
issn = "0379-153X",
publisher = "Polymer Society of Korea",
number = "6",

}

TY - JOUR

T1 - Properties of blends of polycarbonate and polypropylene (I)

T2 - Crystallization behavior

AU - Chun, Y. S.

AU - Lee, H. S.

AU - Oh, T. S.

AU - Kim, Woo Nyon

PY - 1996/12/1

Y1 - 1996/12/1

N2 - Blends of polycarbonate (PC) and polypropylene (PP) have been investigated by differential scanning calorimetry and polarized-light microscopy. From the measured melting temperature (Tm) of the PC-PP blends, it appears that the values of Tm of PP in the blends are shown to almost unchanged compare to that of the unblended PP. In the PC-PP blends, double crystallization peak are observed at about 80 °C and 100 °C when the PP becomes dispersed phase. This result indicates that the nucleation of PP in the PC-PP blends is divided into two parts: heterogeneous nucleation and homogeneous nucleation. For the blends of PC and PP with styrene-ethylene-butylene-styrene triblock copolymer (SEBS), the SEBS acts as a heterogeneous nucleating agent, thus a single crystallization peak is observed at about 100 °C. In the study of morphology of PC-rich composition, it was found that the spherulite size was decreased when the crystallization temperature was about 80 °C compare to the crystallization temperature was about 100 °C. This result is consistent with the double crystallization behavior of PP. From the above results, it is suggested that the nucleation of PP in the PC-rich composition is divided into two parts with the type of the dispersion and the size of the dispersed phase. From the measured crystallization temperature of PP in the blends, the interfacial free energy between the heterogeneous nuclei and the PP of the blends.

AB - Blends of polycarbonate (PC) and polypropylene (PP) have been investigated by differential scanning calorimetry and polarized-light microscopy. From the measured melting temperature (Tm) of the PC-PP blends, it appears that the values of Tm of PP in the blends are shown to almost unchanged compare to that of the unblended PP. In the PC-PP blends, double crystallization peak are observed at about 80 °C and 100 °C when the PP becomes dispersed phase. This result indicates that the nucleation of PP in the PC-PP blends is divided into two parts: heterogeneous nucleation and homogeneous nucleation. For the blends of PC and PP with styrene-ethylene-butylene-styrene triblock copolymer (SEBS), the SEBS acts as a heterogeneous nucleating agent, thus a single crystallization peak is observed at about 100 °C. In the study of morphology of PC-rich composition, it was found that the spherulite size was decreased when the crystallization temperature was about 80 °C compare to the crystallization temperature was about 100 °C. This result is consistent with the double crystallization behavior of PP. From the above results, it is suggested that the nucleation of PP in the PC-rich composition is divided into two parts with the type of the dispersion and the size of the dispersed phase. From the measured crystallization temperature of PP in the blends, the interfacial free energy between the heterogeneous nuclei and the PP of the blends.

UR - http://www.scopus.com/inward/record.url?scp=23444434551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23444434551&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:23444434551

VL - 20

SP - 1071

EP - 1079

JO - Polymer (Korea)

JF - Polymer (Korea)

SN - 0379-153X

IS - 6

ER -