方案摘要
方案下载应用领域 | |
检测样本 | |
检测项目 | |
参考标准 |
Corn starch of different physical forms (solid and liquid) was irradiated with 60Co gamma rays and electron beam in the dose range of 50 Gy to 100 kGy to investigate the effect of ionizing radiation on its molecular weight (Mw). Degradation was observed for both solid and liquid states upon radiation. However, degradation of the starch in the liquid state was remarkably greater than that in the solid state. The free radicals that formed during water irradiation must be responsible for such degradation in the liquid form. Thermostated viscometer, rheometer and multi‐angle static laser light scattering were employed to study the changes in the Mw of corn starch that occurred during irradiation at constant temperature and different concentrations. It was observed that electron beam irradiated corn starch has uniform decreasing in Mw and radius of gyration (Rg) in the range of (4.4×107–2.9×107 g mol?1) and (199.3–85.6 nm), respectively. The influence of gas atmosphere on the degradation process during gamma irradiation was studied to find that, the Mw and Rg values were in the range of (4.4×107–1.8×107 g mol?1) and (199.3–120.4 nm) for the oxygen saturated samples, while, they were (4.4×107–1.05×107 g mol?1) and (199.3–85.6 nm) for the argon saturated samples.
NanoBrook产品应用-12-ZetaPALS
NanoBrook产品应用-16-ZetaPALS
相关产品
NanoBrook 173Plus多角度粒度分析仪
布鲁克海文高灵敏Zeta电位分析仪ZetaPALS
布鲁克海文Zeta电位分析仪 ZetaPlus
布鲁克海文(Brookhaven)多角度粒度分析仪173Pl
EyeTech 激光光阻粒度粒形分析仪
布鲁克海文 多角度粒度及高灵敏Zeta电位分析仪 Omni
布鲁克海文高灵敏度Zeta电位及粒度分析仪90Plus PALS
布鲁克海文Zeta电位及激光粒度分析仪90Plus Zeta
布鲁克海文激光粒度仪90Plus
布鲁克海文广角动/静态激光散射仪BI-200SM
布鲁克海文多角度激光光散射(绝对分子量测定)仪MwA
布鲁克海文圆盘式离心/沉降粒度仪
布鲁克海文高灵敏在线粒度分析仪NanoDLS
布鲁克海文ACOS实时在线粒度检测系统
高浓度粒度分析仪
关注
拨打电话
留言咨询