Demand for polymer films with higher service temperature for use in modern industrial, automotive, and related applications has driven the development of novel composite materials. In this work, the storage moduli of PET (polyethylene terephthalate) and PPS (polyphenylene sulfide) were maintained and quantified up to 140 and 160°C respectively through nanolayer coextrusion processing against high Tg COC (cyclic olefin copolymer) support layers. Layer multiplying coextrusion was leveraged to produce nanolayered cast films with COC layers ranging from 40 to 200 nm. The nanolayered films were able to maintain a 35–40% higher modulus, up to the glass transition of the continuous COC support layers, as compared to extruded blend films with an identical composition of high temperature glassy polymer. The results demonstrate leveraging polymer processing techniques to enable advanced high temperature performance of commercial polymer materials without the need for additives or additional polymer chain modifications enabling more rapid scaling to industrial adoption.
StellaFVicoECittantiD, et al.Design and testing of an automotive compliant 800 V 550 kVA SiC traction inverter with full-ceramic DC-link and EMI filter. In: Processing of IEEE Energy Convers Congr Expo (ECCE). IEEE, 2022, pp. 1–8.
3.
ChowdhurySGurpinarEOzpineciB. Capacitor technologies: characterization, selection, and packaging for next-generation power electronics applications. IEEE Trans Transp Electrif2022; 8(2): 2710–2720. https://doi.org/10.1109/tte.2021.3139806
4.
MoradiJAndwariAMGharehghaniA, et al.Advanced thermal management strategies for electric vehicles: enhancing efficiency, reliability, and performance. Future Energy2025; 4(1): 43–49. https://doi.org/10.55670/fpll.fuen.4.1.5
5.
XieZFanLLiH, et al.Recent trends in all-organic polymer dielectrics for high-temperature electrostatic energy storage capacitors. Prog Polym Sci2025; 164: 101957. https://doi.org/10.1016/j.progpolymsci.2025.101957
FangWChengYHPearsonA, et al.A polyamide and polyethylene multilayer composite with enhanced barrier and mechanical properties at high temperature. RSC Appl Polym2024; 2(6): 1170–1181. https://doi.org/10.1039/d4lp00220b
8.
LangheDPontingM. Manufacturing and novel applications of multilayer polymer films. William Andrew, 2016.
9.
PontingMHiltnerABaerE. Polymer nanostructures by forced assembly: process, structure, and properties. Macromol Symp2010; 294(1): 19–32. https://doi.org/10.1002/masy.201050803
10.
HarderRE.Interfacial surface generator. U.S. Patent 3,195,865. Dow Chemical Co, 1965.
11.
SchrenkWJChisholmDSCleeremanKJAlfreyTJr. Method of preparing multilayer plastic articles: US Patent 3,565,985. Dow Chemical Co, 1971.
12.
SchrenkWJ.Apparatus for multilayer coextrusion of sheet or film. U.S. Patent3,884,606. Dow Chemical Co., 1975.
13.
LewisRAWisniewskiDMRamanathanR, et al. Layer thickness gradient control in multilayer polymeric bodies. U.S. Patent5,389,324. 3M Innovative Properties Co., 1995.
14.
CarrJMLangheDSPontingMT, et al.Confined crystallization in polymer nanolayered films: a review. J Mater Res2012; 27(10): 1326–1350. https://doi.org/10.1557/jmr.2012.17
15.
YinKZhangJLiZFengJZhangCChenX, et al.Polymer multilayer films for high temperature capacitor application. J Appl Polym Sci2019; 136(20): 47535.
16.
ChenXLiQLangheD, et al.Achieving flat-on primary crystals by nanoconfined crystallization in high-temperature polycarbonate/poly (vinylidene fluoride) multilayer films and its effect on dielectric insulation. ACS Appl Mater Interfaces2020; 12(40): 44892–44901. https://doi.org/10.1021/acsami.0c15457
17.
MackeyMFlandinLHiltnerA, et al.Confined crystallization of PVDF and a PVDF-TFE copolymer in nanolayered films. J Polym Sci B Polym Phys2011; 49(24): 1750–1761. https://doi.org/10.1002/polb.22375
18.
LozayQBeuguelQFollainN, et al.Structural and barrier properties of compatibilized PE/PA6 multinanolayer films. Membranes2021; 11(2): 75. https://doi.org/10.3390/membranes11020075
19.
WangHKeumJKHiltnerA, et al.Confined crystallization of PEO in nanolayered films impacting structure and oxygen permeability. Macromolecules2009; 42: 7055–7066. https://doi.org/10.1021/ma901379f
20.
WangHKeumJKHiltnerA, et al.Confined crystallization of polyethylene oxide in nanolayer assemblies. Science2009; 323: 757–760. https://doi.org/10.1126/science.1164601
21.
HuangHChenXLiR, et al.Flat-on secondary crystals as effective blocks to reduce ionic conduction loss in polysulfone/poly (vinylidene fluoride) multilayer dielectric films. Macromolecules2018; 51(14): 5019–5026. https://doi.org/10.1021/acs.macromol.8b01037
22.
LiuRYFJinYHiltnerA, et al. Probing nanoscale polymer interactions by forced-assembly. Macromol Rapid Commun2003; 24(16): 943–948. https://doi.org/10.1002/marc.200300051
23.
LiuRYFBernal-LaraTEHiltnerA, et al.Polymer interphase materials by forced assembly. Macromolecules2005; 38(11): 4819–4827. https://doi.org/10.1021/ma047292z
24.
JuTChenXLangheD, et al.Enhancing breakdown strength and lifetime of multilayer dielectric films by using high temperature polycarbonate skin layers. Energy Storage Mater2022; 45: 494–503. https://doi.org/10.1016/j.ensm.2021.12.009
25.
JuTTreufeldIWolakM, et al.Effect of glass transition temperature on enhanced dielectric breakdown strength and lifetime of multilayer polymer films. ACS Appl Mater Interfaces2023; 16(1): 795–800. https://doi.org/10.1021/acsami.3c15430
26.
LiZChenXZhangC, et al.High dielectric constant polycarbonate/nylon multilayer films capacitors with self-healing capability. ACS Appl Polym Mater2019; 1(4): 867–875. https://doi.org/10.1021/acsapm.9b00099
27.
MessinTMaraisSFollainN, et al.Biodegradable PLA/PBS multinanolayer membrane with enhanced barrier performances. J Membr Sci2020; 598: 117777. https://doi.org/10.1016/j.memsci.2019.117777
28.
FernandesNSDelpouveNSollogoubC, et al.Impact of nanoconfinement on polylactide crystallization and gas barrier properties. ACS Appl Mater Interfaces2020; 12(8): 9953–9965. https://doi.org/10.1021/acsami.9b21391
29.
CabreraGTouilIMasghouniE, et al.Multi-Micro/nanolayer films based on polyolefins: new approaches from eco-design to recycling. Polymers2021; 13(3): 413. https://doi.org/10.3390/polym13030413
30.
AdamHBYousfiMMaazouzA, et al.Recycling of polystyrene/polyethylene micro/nanolayered films: effect of melt rheological properties mismatch on induced morphological and mechanical performances. Polym Eng Sci2025; 65(11): 6357–6368. https://doi.org/10.1002/pen.70137
31.
PontingMLinYKeumJK, et al.Effect of substrate on the isothermal crystallization kinetics of confined poly (ε-caprolactone) nanolayers. Macromolecules2010; 43(20): 8619–8627. https://doi.org/10.1021/ma101625h
32.
NassarSFDomenekSGuinaultA, et al.Structural and dynamic heterogeneity in the amorphous phase of poly (L, L-lactide) confined at the nanoscale by the coextrusion process. Macromolecules2018; 51(1): 128–136. https://doi.org/10.1021/acs.macromol.7b02188
33.
JinYRogunovaMHiltnerA, et al.Structure of polypropylene crystallized in confined nanolayers. J Polym Sci B Polym Phys2004; 42(18): 3380–3396. https://doi.org/10.1002/polb.20211
34.
JinYHiltnerABaerE. Fractionated crystallization of polypropylene droplets produced by nanolayer breakup. J Polym Sci B Polym Phys2007; 45(10): 1138–1151. https://doi.org/10.1002/polb.21146
35.
WangMShenJLiJ, et al.Effect of morphology on the interfacial slip of immiscible polypropylene/polystyrene blends. Rheol Acta2013; 52(10): 963–972. https://doi.org/10.1007/s00397-013-0725-3
36.
LiJTouilILuB, et al.Interfacial shear and elongational rheology of immiscible multi-micro-nanolayered polymers: contribution for probing the effect of highly mismatched viscoelastic properties and modeling interfacial tension properties. Rheol Acta2024; 63(5): 361–377. https://doi.org/10.1007/s00397-024-01445-z
37.
LuBLamnawarKMaazouzA, et al.Critical role of interfacial diffusion and diffuse interphases formed in multi-micro-/nanolayered polymer films based on poly (vinylidene fluoride) and poly (methyl methacrylate). ACS Appl Mater Interfaces2018; 10(34): 29019–29037. https://doi.org/10.1021/acsami.8b09064
38.
JiXChenDZhengY, et al.Multilayered assembly of poly (vinylidene fluoride) and poly (methyl methacrylate) for achieving multi-shape memory effects. Chem Eng J2019; 362: 190–198. https://doi.org/10.1016/j.cej.2019.01.016
39.
MessinTMaraisSFollainN, et al.Impact of water and thermal induced crystallizations in a PC/MXD6 multilayer film on barrier properties. Eur Polym J2019; 111: 152–160. https://doi.org/10.1016/j.eurpolymj.2018.12.021
40.
WangJAdamiDLuB, et al.Multiscale structural evolution and its relationship to dielectric properties of micro-/nano-layer coextruded PVDF-HFP/PC films. Polymers2020; 12(11): 2596. https://doi.org/10.3390/polym12112596
41.
DooleyJJenkinsSRLeePCD. Coextruded multilayer cyclic olefin polymer films or sheet having improved moisture vapor barrier. U.S. Patent Application Publication US2014/0363600 A1. 2014.
42.
ZhangGLeePCJenkinsS, et al.The effect of confined spherulite morphology of high-density polyethylene and polypropylene on their gas barrier properties in multilayered film systems. Polymer2014; 55(17): 4521–4530. https://doi.org/10.1016/j.polymer.2014.07.009
43.
PontingMWahabZWolakMA. Multilayered high-temperature dielectric film. U.S. Patent 12,119,180. 2024.
HuangHChenXYinK, et al.Reduction of ionic conduction loss in multilayer dielectric films by immobilizing impurity ions in high glass transition temperature polymer layers. ACS Appl Energy Mater2018; 1(2): 775–782. https://doi.org/10.1021/acsaem.7b00211
46.
TsengJKTangSZhouZ, et al.Interfacial polarization and layer thickness effect on electrical insulation in multilayered polysulfone/poly (vinylidene fluoride) films. Polymer2014; 55(1): 8–14. https://doi.org/10.1016/j.polymer.2013.11.042
47.
WahabZPatzJPontingM. Nanolayer coextrusion enabling high strength and high temperature polymer films. In: ANTEC 2024, St. Louis, MO, March 4-7, 2024.
48.
WahabZWolakMPontingM. Optimization of biaxially stretched, nanolayered films for high temperature capacitors. In: ANTEC 2025, Philadelphia, PA, March 3-6, 2025.
NazirFIqbalMKhanAN, et al.Fabrication of robust poly L-lactic acid/cyclic olefinic copolymer (PLLA/COC) blends: study of physical properties, structure, and cytocompatibility for bone tissue engineering. J Mater Res Technol2021; 13: 1732–1751. https://doi.org/10.1016/j.jmrt.2021.05.073
51.
KulkarniSReuversMCWutzlerA, et al.Viscoelastic behavior of polyamide 6–COC blends: role of crystallinity and frequency-domain modeling. J Appl Polym Sci2025; 142(47): e57856. https://doi.org/10.1002/app.57856
HanschmannB. Precipitation of polypropylene and polyethylene terephthalate powders using green solvents via temperature and antisolvent-induced phase separation. Adv Polym Technol2023; 2023: 7651796. https://doi.org/10.1155/2023/7651796
