Fig. 8
From: Injectable PTHF-based thermogelling polyurethane implants for long-term intraocular application
Polymer analysis in vitreous harvested after 3 months. A Representative quantitative 1H NMR of harvested vitreous in CDCl3 with 5 mg mL−1 benzoic acid as reference (protons are labelled accordingly on spectrum) was performed to quantify the amount of 7 wt% EPT5-1 T thermogel copolymer remnant in the vitreous. B Quantification of NMR results with benzoic acid as reference. (n = 3) C Retention time spectrum of the harvested vitreous (n = 3) was analysed using GPC with THF solvent. The harvested vitreous was lyophilised and extracted with chloroform first to isolate the polymer