Photographic and cinematographic films of cellulose triacetate safeguarded in historical and cultural institutions are often contaminated by fungi when stored in inadequate conditions of humidity and temperature. The presence of fungi affects the image contained in the films, accelerates the process of biodeterioration and represents a risk to the health of people working with contaminated materials. In addition, another common physicochemical degradation affecting cellulose triacetate films causing deacetylation of polymer chain is called “vinegar syndrome”. Considering the dose interval established for the disinfection of cultural heritage materials, in this work the effects of irradiation with gamma rays and electron beam on photographic and cinematographic films of cellulose triacetate were evaluated. Additionally, the thermal stability behavior of the films and the feasibility of crosslinking of CTA films were investigated. Film samples were selected and characterized by FTIR-ATR spectroscopy. Irradiated samples by gamma rays and electron beam with radiation absorbed doses between 6 kGy and 200 kGy were examined by FEGSEM microscopy, UV–Vis spectrophotometry and differential scanning calorimetry (DSC). The results showed that disinfection by gamma and electron beam irradiation, in the dose range of 6 kGy–10 kGy, does not change or modification of main properties of the constitutive materials of photographic and cinematographic films. The applied dose of 50 kGy, both gamma rays and electron beam, indicated a crosslinking effect on the films and can be considered a possibility for the treatment of films affected by the “vinegar syndrome”.

历史和文化机构保护的三乙酸纤维素的摄影和电影胶片在湿度和温度不足的情况下经常被真菌污染。真菌的存在会影响胶卷中包含的图像，加速生物降解过程，并对使用被污染材料的人们的健康构成威胁。此外，另一种影响三乙酸纤维素膜导致聚合物链脱乙酰化的常见物理化学降解称为“醋综合症”。考虑到确定用于文化遗产材料消毒的剂量间隔，在这项工作中，评估了γ射线和电子束辐照对三乙酸纤维素的摄影和摄影胶片的影响。此外，研究了薄膜的热稳定性行为和CTA薄膜交联的可行性。选择膜样品并通过FTIR-ATR光谱法表征。用FEGSEM显微镜，UV-Vis分光光度法和差示扫描量热法（DSC）检查了伽玛射线和电子束辐照的样品，其辐射吸收剂量在6 kGy和200 kGy之间。结果表明，在6 kGy–10 kGy的剂量范围内，通过伽玛射线和电子束辐照进行消毒不会改变或改变摄影和电影胶卷的构成材料的主要性能。50 kGy的伽马射线和电子束剂量表明了对薄膜的交联作用，可以认为是治疗受“醋综合征”影响的薄膜的一种可能性。