Surface roughness and light transmission of biaxially oriented polypropylene films

Yuan, Li-Yan; Dias, P.; Chum, S. P.; Hiltner, A.; Baer, E.

doi:10.1002/pen.20850

Cited by 51 publications

(32 citation statements)

References 8 publications

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“…The electrolyte-polypropylene interface presents almost no change in electron density, and hence no x-ray reflectivity signal. The polypropylene-air interface, with an RMS roughness of ∼20 nm, 17 will contribute negligibly to the scattering signal at L = 0.17 when compared against the relatively smooth and high-Z Au surface.…”

Section: Experimental Methodsmentioning

confidence: 99%

Dynamics of the Au (001) surface in electrolytes:In situcoherent x-ray scattering

et al. 2012

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We studied the dynamics of the Au (001) surface in 0.1 M HClO 4 electrolyte solution using coherent surface x-ray scattering (CSXS). We find that edges of steps and islands on the Au (001) surface are highly dynamic in electrolyte and evolve continuously even at room temperature. The evolving speed increases nearly two orders of magnitude when the quasihexagonal reconstruction is lifted during slow potential sweep and is higher by more than four orders of magnitude than the speed measured previously in vacuum. In addition, we find that surface lattice dynamics appear when the reconstruction is lifted, and they are faster by two orders of magnitudes than the edge dynamics. Complementary scanning tunneling microscopy images are also presented for visual confirmation of the changes measured by the CSXS technique.

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Section: Experimental Methodsmentioning

confidence: 99%

Dynamics of the Au (001) surface in electrolytes:In situcoherent x-ray scattering

et al. 2012

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“…It is seen that EPR15/EPR9(5/5) blend shows bigger spherulites than those of EPR9. It has been reported that the transparency of a semi‐crystalline polymer is mainly influenced by the size of the spherulite . The bigger spherulites result in strong light scattering and poor transparency .…”

Section: Resultsmentioning

confidence: 99%

Study on adhesion strength, thermal creep resistance, and light transmittance of ethylene‐polypropylene copolymer grafted with silane for photovoltaic application

Kim¹,

Lee²,

Park

et al. 2016

J of Applied Polymer Sci

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We investigated the possibility of using PP as an encapsulant in a photovoltaic module. PP is inexpensive but shows low adhesion strength to glass (and silicon wafer) due to its nonpolar nature as well as opacity due to its crystalline nature. We resolved these problems by employing metallocene catalyzed ethylene-propylene copolymer (EPR) and a nucleating agent to increase the transparency. Five EPRs having various propylene/ethylene ratios were investigated. EPRs having higher propylene content showed higher adhesion strength to the glass substrate. However, it is not appropriate to use EPRs with higher propylene content because they show low processability in calendaring processing. We therefore used a blend of two EPRs. The blend of the two EPRs showed somewhat low transparency. When the nucleating agent was incorporated in the blend, the transparency was remarkably increased. The adhesion strength to the glass plate was enhanced by a silane coupling agent.

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“…The increase above is, however, due to the increase in number of complete conductive path. Loss of light intensity due to the surface is mainly caused by light reflection of the surface and by light scattering from surface roughness [16]. When light passes through a MEH-PPV:CNTs nanocomposite film, it is scattered from both surfaces.…”

Section: A Electrical Propertiesmentioning

confidence: 99%

Conductivity enhancement of nanocomposited MEH-PPV:I-MWNT thin film

Sarah

Zahid

Noor

et al. 2012

2012 IEEE Symposium on Humanities, Science and Engineering Research

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In this paper, we report the electrical conductivity of nanocomposited MEH-PPV:I-MWNT thin film by varying the composition of Iodine doped multi-walled nanotubes (I-MWNT) in MEH-PPV matrix from 0, 2 and 4 wt%. Electrical conductivity showed increasing in value as the composition of I-MWNT increased from 0, 2 to 4 wt%. The value of conductivity is very outstanding when the polymer was blended with I-MWNT where the value rise from pure MEH-PPV, 81.6 x 10 -4 S/m to 67.68 x 10 4 and 80.28 x 10 4 S/m for 2 and 4 wt% respectively. The surface morphology was investigated using atomic for microscopy (AFM). Roughness of the thin film showed decrement in value from 5.385 nm, 0.751 nm and 0.643 nm for 0, 2, and 4 wt% respectively. Meanwhile, the absorbance value increase slightly from about 0.16 (0 wt%) to about 0.165 and 0.17 ( 2 and 4 wt% respectively). The low absorbance shows that low photon is absorbed and therefore, there is no current changes when the sample is illuminated compared to in dark.

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Surface roughness and light transmission of biaxially oriented polypropylene films

Cited by 51 publications

References 8 publications

Dynamics of the Au (001) surface in electrolytes:In situcoherent x-ray scattering

Dynamics of the Au (001) surface in electrolytes:In situcoherent x-ray scattering

Study on adhesion strength, thermal creep resistance, and light transmittance of ethylene‐polypropylene copolymer grafted with silane for photovoltaic application

Conductivity enhancement of nanocomposited MEH-PPV:I-MWNT thin film

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