Abstract:Taking the laser‐based FT–Raman spectroscopy and liquid‐based capillary rise as two methods, the wood absorption at the capillary and non‐capillary are studied and quantitatively evaluated. According to the optical method, the natural capillary has greater absorption ability of about two to three times than that of the non‐capillary for pine wood while this value would be reduced in liquid absorption process due to accompanied Lifshitz–van der Waals and Lewis acid–base interactions. The absorption amount is al… Show more
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