AbstractComparisons were made of changes in molecular weight and in tensile strength of regenerated cellulose after exposure to 40 KOH at 90°C., for varying lengths of time. In the absence of air, both parameters decreased in a fairly consistent manner. In the presence of air, an initial steeper drop was followed by an irregular up‐and‐down pattern. The theory is advanced that the increase in tensile strength was caused by increased crystalli
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