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. Author manuscript; available in PMC: 2015 May 14.
Published in final edited form as: J Mater Chem B. 2014 May 14;2(18):2764–2772. doi: 10.1039/C4TB00083H

Fig. 2.

Fig. 2

DSC data of cyclodextrin:HDI polymers showing that sterilization has minimal effect on the heating profile and crystallinity.(A) Polymers sterilized by autoclave, ethylene oxide and gamma radiation compared to a non-sterilized polymer. After baseline subtraction, two irreversible peaks, centered at 125°C (embedded water content) and 235°C (non-descriptive thermal memory), are observed. Polymers sterilized with ethylene oxide had less embedded water content; ethylene oxide reacted with the water content inside the polymer. (B) The water peak (125°C) does not exist after polymers are sterilized by dry heat; the water evaporates from the polymer. The peak at 125°C returns once the dried polymer is re-exposed to water.