Effects of ionic cross-linking on the non-exponentiality of the α -relaxation in metaphosphate glass melts as measured by dynamic light scattering
Effects of ionic cross-linking on the non-exponentiality of the α -relaxation in metaphosphate glass melts as measured by dynamic light scattering
复制标题
通过动态光散射测量离子交联对偏磷酸盐玻璃熔体中α弛豫非指数性的影响
DOI：
10.1016/j.jnoncrysol.2023.122810
复制
发表时间：
2024
影响因子：
3.5
通讯作者：
Sidebottom, D.L.
中科院分区：
文献类型：
--
作者：
Austin, J.;McCown, J.;Sidebottom, D.L.
对一系列偏磷酸盐玻璃熔体进行光子相关光谱测量，以测量玻璃化转变附近的液体的动态结构因子，从而表征其时间衰减的非指数性程度。每种偏磷酸盐都由[PO 4]− 1单体的聚合物链组成，其中散布着各种改性阳离子（Ag+，Ba 2，Ca 2+，Sr 2+），这些阳离子可以通过离子键形成链间交联。结果表明，α弛豫的非指数性随阳离子-氧键场强的增加而单调减小.
Photon correlation spectroscopy was conducted on a series of metaphosphate glass melts to measure the liquid's dynamic structure factor near the glass transition and thereby characterize the degree of non-exponentiality in its time decay. Each metaphosphate consists of polymeric chains of [PO 4]− 1 monomers interspersed by a variety of modifying cations (Ag+, Ba 2, Ca 2+, Sr 2+) which can potentially form inter-chain crosslinks via ionic bonding. Our results show that the non-exponentiality of the α-relaxation decreases monotonically with increasing field strength of the cation-oxygen bond.