Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Local orientation of chains at crystal/amorphous interfaces buried in isotactic polypropylene thin films

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/d1cp03959h· OSTI ID:1982190

A better understanding of the aggregation states of polymer chains in thin films is of pivotal importance for developing thin film polymer devices in addition to its inherent scientific interest. Here we report the preferential orientation of the crystalline lamellae for isotactic polypropylene (iPP) in spin-coated films by grazing incidence of wide-angle X-ray diffraction in conjunction with sum frequency generation vibrational spectroscopy, which provides information on the local conformation of chains at crystal/amorphous interfaces buried in a thin film. The crystalline orientation of iPP, which formed cross-hatched lamellae induced by lamellar branching, altered from a mixture of edge-on and face-on mother lamellae to preferential face-on mother lamellae with decreasing thickness. Here, the orientation of methyl groups at the crystal/amorphous interfaces in the interior region of the iPP films changed, accompanied by a change in the lamellar orientation.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012704; AC02-98CH10886
OSTI ID:
1982190
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 41 Vol. 23; ISSN 1463-9076; ISSN PPCPFQ
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (73)

Branched Crystalline Patterns Formed Around Poly(ethylene oxide) Dots in Humidity journal October 2002
Enhanced Vertical Charge Transport in a Semiconducting P3HT Thin Film on Single Layer Graphene journal November 2014
Substrate‐Dependent Molecular and Nanostructural Orientation of Nafion Thin Films journal July 2019
Crystal Growth in Poly(L-lactide) Thin Film Revealed by in situ Atomic Force Microscopy journal October 2003
Intercrystalline links in polyethylene crystallized from the melt journal April 1966
Crystalline morphology evolution in PCL thin films journal January 2005
Structure and morphology control in thin films of regioregular poly(3-hexylthiophene) journal July 2011
Mechanical properties and fine structure of drawn polymers journal January 1967
Size Exclusion Chromatography book January 1999
Melting behavior of lamellae of isotactic polypropylene studied using hot-stage atomic force microscopy journal November 2006
Observation of C-H stretch vibrations of monolayers of molecules optical sum-frequency generation journal January 1987
Polymorphism of crystalline polypropylene journal January 1961
The Raman spectra of oriented isotactic polypropylene journal November 1995
Studies of surface structures and compositions of polyethylene and polypropylene by IR+visible sum frequency vibrational spectroscopy journal December 1997
Growth shape of isotactic polystyrene crystals in thin films journal August 2001
Kinetic of crystallization from the melt and chain folding in polyethylene fractions revisited: theory and experiment journal January 1997
Isotacticity dependence of spherulitic morphology of isotactic polypropylene journal October 1998
Morphological study of melt-crystallized poly(ethylene terephthalate): B. Thin films journal December 2003
Thickness-dependent crystal orientation in poly(trimethylene 2,6-naphthalate) films studied with GIWAXD and RA-FTIR methods journal April 2008
Molecular dynamics simulations of polymer crystallization under confinement: Entanglement effect journal January 2017
Independent Variation of Transition Temperature and Prefrozen Layer Thickness at the Prefreezing Transition journal November 2020
The Impact of Polymer Dynamics on Photoinduced Carrier Formation in Films of Semiconducting Polymers journal November 2015
Morphological Changes of Isotactic Polypropylene Crystals Grown in Thin Films journal August 2017
Locally Favored Two-Dimensional Structures of Block Copolymer Melts on Nonneutral Surfaces journal January 2018
Conformational Relaxation of Poly(styrene-co-butadiene) Chains at Substrate Interface in Spin-Coated and Solvent-Cast Films journal March 2018
Aggregation States of Polymers at Hydrophobic and Hydrophilic Solid Interfaces journal October 2015
Signal Enhanced FTIR Analysis of Alignment in NAFION Thin Films at SiO 2 and Au Interfaces journal December 2015
Flattening Process of Polymer Chains Irreversibly Adsorbed on a Solid journal March 2016
Reorientation Kinetics of Local Conformation of Polyisoprene at Substrate Interface journal December 2017
Direct Observation of Conformational Relaxation of Polymer Chains at Surfaces journal September 2018
Dynamics Gradient of Polymer Chains near a Solid Interface journal July 2019
Effect of Thickness-Dependent Microstructure on the Out-of-Plane Hole Mobility in Poly(3-Hexylthiophene) Films journal September 2012
Enhanced Mobility of Poly(3-hexylthiophene) Transistors by Spin-Coating from High-Boiling-Point Solvents journal November 2004
Variations in Semiconducting Polymer Microstructure and Hole Mobility with Spin-Coating Speed journal November 2005
Enhancement of Out-of-plane Mobility in P3HT Film by Rubbing: Aggregation and Planarity Enhanced with Low Regioregularity journal April 2015
Interfacial Mobility of Polymers on Inorganic Solids journal March 2009
Direct Observation of Growth of Lamellae and Spherulites of a Semicrystalline Polymer by AFM journal December 2000
Real-Time Evolution of the Lamellar Organization of Poly(ethylene terephthalate) during Crystallization from the Melt:  High-Temperature Atomic Force Microscopy Study journal December 2001
Ultrathin Films of Poly(ethylene oxides) on Oxidized Silicon. 2. In Situ Study of Crystallization and Melting by Hot Stage AFM journal February 2003
Lamellar Branching of Poly(bisphenol A-co-decane) Spherulites at Different Temperatures Studied by High-Temperature AFM journal April 2003
In-Situ Hot Stage Atomic Force Microscopy Study of Poly(ε-caprolactone) Crystal Growth in Ultrathin Films journal December 2004
Kinetics of Surface Crystallization in Thin Films of Poly(ethylene terephthalate) journal February 2005
Crystal Pattern Formation and Transitions of PEO Monolayers on Solid Substrates from Nonequilibrium to near Equilibrium journal December 2005
Lamellar Crystal Orientations Biased by Crystallization Kinetics in Polymer Thin Films journal June 2006
Dynamics of Water-Induced Surface Reorganization in Poly(methyl methacrylate) Films journal May 2012
Local Conformation and Relaxation of Polystyrene at Substrate Interface journal May 2012
Heterogeneous Lamellar Structures Near the Polymer/Substrate Interface journal August 2012
What Controls the Lamellar Orientation at the Surface of Polymer Films during Crystallization? journal April 2008
Morphological Behavior of Thin Linear Low-Density Polyethylene Films journal September 2008
Surface properties probed by second-harmonic and sum-frequency generation journal February 1989
Two-dimensional charge transport in self-organized, high-mobility conjugated polymers journal October 1999
The lifetime of the deviations from bulk behaviour in polymers confined at the nanoscale journal March 2011
Highly oriented crystals at the buried interface in polythiophene thin-film transistors journal February 2006
Model polymer nanocomposites provide an understanding of confinement effects in real nanocomposites journal March 2007
Stabilization of polystyrene thin films by introduction of a functional end group journal June 2016
Metastable interface formation in isotactic poly(methyl methacrylate)/alumina nanoparticle mixtures journal February 2018
Interfacial morphologies and associated processes of multicomponent polymers journal July 2018
Aggregation States of Poly(4-methylpentene-1) at a Solid Interface journal November 2018
Lamellar orientation in isotactic polypropylene thin films: a complement study via grazing incidence X-ray diffraction and surface/cross-sectional imaging journal October 2018
An Effect of Molecular Motion on Carrier Formation in a Poly(3-hexylthiophene) Film journal February 2015
Local conformation of poly(methyl methacrylate) at nitrogen and water interfaces journal January 2010
Effects of nanoscopic-confinement on polymer dynamics journal January 2015
Interface and surface effects on the glass-transition temperature in thin polymer films journal January 1994
Mechanism for lamellar branching in isotactic polypropylene journal March 1973
Formulas for the analysis of surface sum‐frequency generation spectrum by CH stretching modes of methyl and methylene groups journal January 1992
Depth-resolved local conformation and thermal relaxation of polystyrene near substrate interface journal March 2017
An effect of crystallographic distortion on carrier mobility in poly(3-hexylthiophene) thin films journal May 2021
Crystal structure of isotactic polypropylene journal January 1972
Influence of an impenetrable interface on a polymer glass-transition temperature journal October 1995
Crystallization of Adsorbed Polymer Monolayers journal April 1998
Optical Sum-Frequency Emission from Langmuir-Blodgett Films of Variable Thickness: Effects of the Substrate and Polar Orientation of Fatty Acids in the Films journal February 2006
Structure in Thin and Ultrathin Spin-Cast Polymer Films journal August 1996
S TUDIES OF P OLYMER S URFACES BY S UM F REQUENCY G ENERATION V IBRATIONAL S PECTROSCOPY journal October 2002

Similar Records

The Role of Interlamellar Chain Entanglement in Deformation-Induced Structure Changes During Uniaxial Stretching of Isotactic Polypropylene
Journal Article · Sun Dec 31 23:00:00 EST 2006 · Polymer · OSTI ID:959876

Melting processes of oligomeric α and β isotactic polypropylene crystals at ultrafast heating rates
Journal Article · Thu Feb 06 23:00:00 EST 2014 · Journal of Chemical Physics · OSTI ID:22255176

SAXS Study of Reversibly Crosslinked Isotactic Polypropylene/clay Nanocomposites
Journal Article · Thu Dec 31 23:00:00 EST 2009 · Journal of Applied Polymer Science · OSTI ID:1019779