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On The Crystallization Of γ-isotactic Polypropylene: A High Pressure Study

S. Brückner, P. Phillips, K. Mezghani, S. V. Meille
Published 1997 · Materials Science

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The non-parallel chain structure determined for γ-phase isotactic polypropylene (γ-iPP) is confirmed by Rietveld analysis for highly isotactic high molecular mass iPP crystallized at 200 MPa. The new refinement shows that: (i) stereoregularity or crystallization pressure do not significantly influence the lattice dimensions; (ii) defect inclusion in γ-iPP crystals is unlikely. The α and γ forms have nearly identical bulk internal energy and density, but α-iPP should be normally kinetically favored over γ-iPP which may in turn predominate due to its greater ability to host defects at the crystalline-amorphous interface.



This paper is referenced by
10.1016/J.POLYMER.2012.08.003
Quantification of non-isothermal, multi-phase crystallization of isotactic polypropylene: the influence of cooling rate and pressure
Van Drongelen (2012)
10.1007/s00396-013-2965-2
Crystallization behavior of sorbitol derivative nucleated polypropylene block copolymer under high pressure
Gang Yang (2013)
10.1002/APP.42632
Influences of pre-ordered melt structures on the crystallization behavior and polymorphic composition of β-nucleated isotactic polypropylene with different stereo-defect distribution
J. Kang (2015)
10.1016/S0020-1693(00)00337-6
Synthesis, characterisation and co-polymerisation of ruthenium 1,2-naphthoquinone-1-oxime complexes containing 4-vinylpyridine ligands
Xiao-Xia Liu (2001)
10.1002/PCR2.10002
Quantification of pressure‐induced γ‐crystals in isotactic polypropylene: The influence of shear and carbon nanotubes
Jian‐Mei Lin (2018)
10.1021/ACSANM.7B00049
Layered Double Hydroxide Nanoplatelets with Ultrahigh Specific Surface Area for Significantly Enhanced Crystallization Rate and Thermal Stability of Polypropylene
B. Nagendra (2017)
10.1080/00222348.2014.966892
Comparison Study on CO2-Promoted Crystallization and Melting Behavior of Polypropylene: Homopolymer and Copolymers
X. Cao (2014)
10.1007/978-3-030-12903-3_2
Solid State Polymorphism of Isotactic and Syndiotactic Polypropylene
Finizia Auriemma (2019)
10.1007/S10973-009-0552-Z
Volumetric rheology of polymers
R. Forstner (2009)
10.1016/J.EURPOLYMJ.2005.09.007
Dilute solution behaviour of progressively hydrolyzed polyacrylamide in water–N, N dimethylformamide mixtures
Goutam Bit (2006)
10.1002/PEN.23322
Influence of β-nucleation on polymorphism and properties in random copolymers and terpolymers of propylene
R. Benavente (2012)
10.1016/J.TCA.2019.03.007
The influence of crystallization conditions on the macromolecular structure and strength of γ-polypropylene
C. V. Baeckmann (2019)
10.1021/acsomega.8b03413
Exploring the Effects of Stereo-Defect Distribution on Nonisothermal Crystallization and Melting Behavior of β-Nucleated Isotactic Polypropylene/Graphene Oxide Composites
X. Jiang (2019)
10.1002/ADV.21573
Investigation on the Tensile Behavior and Morphology Evolution of Isotactic Polypropylene Films Polymerized with Different Ziegler–Natta Catalysts
J. Kang (2017)
10.1039/C5PY00339C
Unexpected shear dependence of pressure-induced γ-crystals in isotactic polypropylene
Shu-Gui Yang (2015)
10.1016/J.TCA.2015.01.015
Influence of melt structure on the crystallization behavior and polymorphic composition of polypropylene random copolymer
Bin Wang (2015)
10.1016/J.TCA.2014.11.011
Crystallization and melting behaviors of the β-nucleated isotactic polypropylene with different melt structures – The role of molecular weight
J. Kang (2015)
10.1016/J.POLYMER.2006.06.070
Relationship between structure and dynamic mechanical properties of a carbon nanofiber reinforced elastomeric nanocomposite
A. Kelarakis (2006)
10.1007/12_2015_344
Non-isothermal crystallization of semi-crystalline polymers : the influence of cooling rate and pressure
Van Drongelen (2016)
10.1007/s00396-011-2573-y
Crystallization behavior of isotactic polypropylene induced by competition action of β nucleating agent and high pressure
Gang Yang (2011)
10.1080/1539445X.2019.1610893
Exploring the effects of stereo-defect distribution on the crystallization kinetics of isotactic polypropylene/cellulose nanocrystals composites
Xiuduo Song (2019)
10.3390/polym11030433
Influences of Hyperbranched Polyester Modification on the Crystallization Kinetics of Isotactic Polypropylene/Graphene Oxide Composites
Zengheng Hao (2019)
10.1039/C4RA04231J
New understanding in the influence of melt structure and β-nucleating agents on the polymorphic behavior of isotactic polypropylene
J. Kang (2014)
10.1007/s10118-018-2057-3
Distribution of α-, β-, and γ-Phases in a Multi-flow Injection-molded Hierarchical Structure
Dashan Mi (2018)
10.1002/PEN.20902
The effect of nanoclays on the nucleation, crystallization, and melting mechanisms of isotactic polypropylene
F. Medellín-Rodríguez (2007)
10.1007/s10965-016-1033-2
Bimodal polypropylene through binary metallocene catalytic systems: comparison between hybrid and mixed heterogeneous catalysts
B. Paredes (2016)
10.1016/j.polymer.2020.122556
Influence of structure gradients in injection moldings of isotactic polypropylene on their mechanical properties
Nasir Mahmood (2020)
10.1007/s00396-015-3605-9
Understanding the effects of nucleating agent concentration on the polymorphic behavior of β-nucleated isotactic polypropylene with different melt structures
J. Kang (2015)
10.1080/00222341003648904
Effect of Temperature and Comonomer Content on Thermal Behavior and Crystallization Property of the Propylene–Ethylene Random Copolymers
J. Chen (2010)
10.1002/APP.41355
Effects of melt structure on crystallization behavior of isotactic polypropylene nucleated with α/β compounded nucleating agents
Q. Zhang (2015)
10.1007/s10965-014-0506-4
Isothermal crystallization behavior of β-nucleated isotactic polypropylene with different melt structures
J. Kang (2014)
10.1002/APP.46378
Flow‐induced crystallization of polylactide stereocomplex under pressure
Y. Song (2018)
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