This study reports on the effects of electron beam radiation on pullulan in both the dry state and hydro-methanolic blends containing cinnamyl alcohol (CA). The radiation chemical yields of scission (G(S)) and crosslinking (G(X)) were determined using Saito’s formalism applied to the evolution of molecular weight (MW) with increasing absorbed dose of radiation. To satisfy the requirements of the statistical treatment, commercially available pullulan was fractionated to obtain a monomodal MW distribution with a dispersity close to 2. The changes in MW profiles were monitored by SEC with differential refractive index and UV detection. The introduction of small quantities of CA in the pullulan blends led to a significant decrease in G(S) and G(X), protecting pullulan against radiation-induced effects likely via energy and electron transfer. In presence of larger amounts of CA, irradiation at higher dose induced an increase in molecular mass with concomitant grafting of the aromatic additive.

这项研究报告了干态和含有肉桂醇（CA）的氢甲醇混合物中电子束辐射对支链淀粉的影响。使用Saito的形式主义确定了分裂（G（S））和交联（G（X））的辐射化学收率，该公式适用于随着辐射吸收剂量的增加而演变的分子量（MW）。为了满足统计处理的要求，将可商购的支链淀粉分馏以获得分散度接近2的单峰MW分布。通过SEC的差示折射率和UV检测监测MW分布的变化。在支链淀粉混合物中引入少量CA导致G（S）和G（X）显着降低，保护支链淀粉免受可能通过能量和电子转移引起的辐射诱发的影响。在存在大量CA的情况下，以较高剂量进行辐照会导致分子质量的增加，同时伴随芳族添加剂的接枝。