ASTM F2778 - 09(2015) - Standard Test Method for Measurement of Percent Crystallinity of Polyetheretherketone (PEEK) Polymers by Means of Specular Reflectance Fourier Transform Infrared Spectroscopy (R-FTIR)

ASTM F2778 - 09(2015)

Standard Test Method for Measurement of Percent Crystallinity of Polyetheretherketone (PEEK) Polymers by Means of Specular Reflectance Fourier Transform Infrared Spectroscopy (R-FTIR)

Status : Current   Published : January 2015

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1.1 This test method describes the collection of absorption spectra of polyetheretherketone (PEEK) polymer in filled and unfilled grades, as supplied by a vendor, and the subsequent calculation of the percent crystallinity. The material is evaluated by infrared spectroscopy. The intensity (height) of the absorbance peaks is related to the amount of crystalline regions present in the material.

1.2 This test method can be used for PEEK consolidated forms, such as injection molded parts, as long as the samples are optically flat and smooth.

1.3 The applicability of the infrared method to industrial and medical grade PEEK materials has been demonstrated by scientific studies. 2,3 Percentage of crystallinity is related to R-FTIR measurement by calibration through wide-angle x-ray scattering (WAXS) crystallinity measurements. 2,3 It is anticipated that this test method, involving the peak heights near 1305 cm -1 and 1280 cm -1, will be evaluated in an Interlaboratory Study (ILS) conducted according to Test Method E691.

1.4 This test method does not suggest a desired range of crystallinity for specific applications.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.




Standard NumberASTM F2778 - 09(2015)
TitleStandard Test Method for Measurement of Percent Crystallinity of Polyetheretherketone (PEEK) Polymers by Means of Specular Reflectance Fourier Transform Infrared Spectroscopy (R-FTIR)
StatusCurrent
Publication Date05 January 2015
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Crystallinity, Fourier transmission infrared spectroscopy (FTIR), Polyetheretherketone (PEEK), Specular reflectance
ICS83.080.20
PublisherASTM
FormatA4
DeliveryYes
Pages4
File Size288 KB
Price£36.00


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