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This paper focused on pretreatment of wheat straw (PWS) using propionic acid, and research the structure and spectral analysis of PWS using electron microscopy,X-ray and infrared spectroscopy.

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The electron microscopy showed that the surface of WPS cracks and holes, and fiber was broken while a large number of hemicellulose dissolution.

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Crystallinity of WPS was 50.8% and untreated straw was 59.4% in the X-ray map.

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Infrared spectroscopy showed that increasing the surface area of cellulose because of hemicellulose and lignin was disolved by propionic acid was good for enzymatic hydrolysis of wheat straw.
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This paper focused on pretreatment of wheat straw (PWS) using propionic acid, and research the structure and spectral analysis of PWS using electron microscopy,X-ray and infrared spectroscopy.

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The electron microscopy showed that the surface of WPS cracks and holes, and fiber was broken while a large number of hemicellulose dissolution.

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Crystallinity of WPS was 50.8% and untreated straw was 59.4% in the X-ray map.

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Infrared spectroscopy showed that increasing the surface area of cellulose because of hemicellulose and lignin was disolved by propionic acid was good for
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