Strain-induced crystallization of vulcanized rubber filled with carbon black and carbon nanotubes studied by synchrotron x-ray scattering

PMSE 241

Hyun Hoon Song, songhh@hannam.ac.kr1, Min Kwan Kang1, Hye-Jin Jeon, hj9594@hannam.ac.kr1, Gwanghoon Kwag, gkwag@camd1.kkpcr.re.kr2, and Hyungkyu Choi2. (1) Department of Advanced Materials, Hannam University, 461-6 Jeonmin-dong, Yuseong-gu, Daejeon, 305-811, South Korea, (2) Kumho Chemical Laboratories, Korea Kumho Petrochemical Co., Ltd, P. O. Box 64, Yuseong, Taejeon, 305-600, South Korea
Strain-induced crystallization of natural rubber containing various amounts of carbon nanotubes (CNTs) and carbon black (CB) was studied by synchrotron X-ray scattering. X-ray scattering intensities from the oriented rubber are decomposed into three phases; isotropic amorphous (IA), oriented noncrystalline (ON), and crystalline (Cr) phase and their changes are monitored upon stretching. The rubber containing CNTs shows early onset point of strain-induced crystallization and the amount of crystal phase (Cr) is higher with the rubber of higher CNTs content. The CNTs in the rubber helps to orient the chains and strain-induced crystallization during the uniaxial stretching. However the CB in rubber act to interrupts the strain-induced crystallization. Keywords rubber, CNTs, CB, strain-induced crystallization, synchrotron X-ray scattering
 

Joint PMSE/POLY Poster Session
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymeric Materials: Science & Engineering

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007