Results 261 to 270 of about 5,294,508 (322)

Oxyluminescence of polyamide 12

Polymer Degradation and Stability, 1994
Abstract The oxyluminescence of unstabilised samples of polyamide 12 was studied in the temperature range 80–250°C. The chemiluminescence intensity was first recorded at constant oxygen pressure and temperature. The kinetic curves reveal the existence of two kinetic stages.
A Tcharkhtchi, L Audouin, J.M Tremillon, J Verdu   +3 more
openaire   +1 more source

Fusion bonding of polyamide 12

Polymer Engineering & Science, 2001
AbstractThe strength of fusion bonds between polyamide 12 plaques has been investigated as a function of processing conditions, using the double cantilever beam geometry to measure the mode I critical strain energy release rate, Gc. Bonding was carried out using an instrumented press, which allowed systematic variation of the bonding time, the holding ...
J.‐E. Zanetto, C. J. G. Plummer, P.‐E. Bourban, J.‐A. E. Månson   +3 more
openaire   +1 more source

Thermoplastic Elastomer Based on Epoxidized Natural Rubber/Polyamide-12 and Co-Polyamide-12 Blends

Advanced Materials Research, 2012
Thermoplastic elastomers based on blending of epoxidized natural rubber with 30 mol% epoxide (ENR-30) with polyamide-12 (PA-12) (i.e., ENR-30/PA-12) and blending of ENR-30 with co-polyamide-12 (ENR-30/CO-PA-12) were prepared by dynamic vulcanization technique. It was found that the dynamically cured ENR-30/PA-12 blends exhibited higher tensile strength,
Rawviyanee Romin, Charoen Nakason, Anoma Thitithammawong   +2 more
openaire   +1 more source

Cyclische monomere und oligomere in polyamid‐11 und polyamid‐12

Die Angewandte Makromolekulare Chemie, 1973
AbstractDer Gleichgewichtsgehalt an cyclischen Monomeren in hydrolytisch Polymerisiertem Polyamid‐11 und Polyamid‐12 bei 280°C wurde aus den Cyclisierungs‐konstanten nach STOLL und ROUVé sowie nach MORAWETZ und GOODMAN, der Gehalt an cyclischen Dimeren und Trimeren nach den statistisch abgeleiteten Beziehungen von JACOBSON und STOCKMAYER berechnet.Die ...
Von R. Feldmann, R. Feinauer
openaire   +1 more source

One‐pot synthesis of polyamide 12,T–polyamide‐6 block copolymers

Journal of Polymer Science Part A: Polymer Chemistry, 2011
AbstractPolyamide 12,T–polyamide‐6 (PA‐12,T–PA‐6) block copolymers were synthesized by anionic polymerization of caprolactam using a PA‐12,T macrocoinitiator (McI). PA‐12,T McI and its precursors are soluble in molten caprolactam allowing for both the McI step‐growth polymerization and anionic polymerization to be performed in one‐pot.
Theodore F. Novitsky, Lon J. Mathias
openaire   +1 more source

Relaxational properties of plasticized polyamide-12

Polymer Science U.S.S.R., 1979
The dielectric relaxation characteristics of polyamide-12 (polydodecalactam), plasticized by sulphonamides of the type RSO2NHC4H9 (where R is phenyl, β-naphthyl, 3-pyridyl or 8-quinolyl), were studied over a wide range of temperatures and frequencies (−100°C to + 100°C and 0.5–200 kHz). The glass temperature and relaxation time were determined, and the
A.I. Suvorova, T.P. Kashpurova, N.I. Novikov, A.A. Dukor, I.A. Nizova   +4 more
openaire   +1 more source

Viskositäts‐molekulargewichts‐beziehung für polyamid‐12

Die Makromolekulare Chemie, 1977
AbstractLight‐scattering and viscosity measurements were performed on dilute solutions of polyamide‐12 in 1,1,1,3,3,3‐hexafluoro‐2‐propanol at 25°C. The [η]‐M̄w relationship was determined to be [η]=8,43·10−4·M̄w0,68 dl g−1.
Reinhart Hammel, Christian Gerth
openaire   +1 more source

The crystallization kinetics of polyamide-12

Colloid & Polymer Science, 2001
The crystallization kinetics of polyamide-12 has been investigated using a combination of differential scanning calorimetry (DSC) and hot-stage optical microscopy. The DSC data for isothermal crystallization were consistent with a simple two-parameter Avrami model for isothermal crystallization and optical measurements of the spherulite growth rates ...
C. J. G. Plummer, J.-E. Zanetto, P.-E. Bourban, J.-A. E. Månson   +3 more
openaire   +1 more source

Revolutionizing Healthcare: Recent Advances of Polyamide 12 in Medical Applications

Global Journal of Medical, Pharmaceutical, and Biomedical Update
Polyamide 12 (PA 12), a widely used thermoplastic polymer, exhibits exceptional mechanical, thermal, and chemical properties, making it a crucial material in various industries, particularly the medical sector.
Logatharshiini Thanabalan, Matheel AL-Rawas, N. F. Ghazalli, Rabihah Alawi, Nor Aidaniza Abdul Muttlib   +4 more
semanticscholar   +1 more source

Multifunctional nanocomposites based on a polyamide 6/polyamide 12 blend and multi‐walled carbon nanotubes

Polymer Engineering & Science
Nanocomposites based on an immiscible blend of polyamide 6 (PA6) and polyamide 12 (PA12) 50/50 wt.% with different contents of multi‐walled carbon nanotubes (MWCNTs) were prepared by extrusion followed by compression molding.
T. Arnal, P. Eisenberg, M. Abad, A. Ares‐Pernas, C. Bernal   +4 more
semanticscholar   +1 more source