十八烷基三氯硅烷表面改性钛酸钾晶须

Surface Modification of Potassium Titanate Whiskers with n-octadecyltrichlorosilane

利用十八烷基三氯硅烷(OTS)的自组装对钛酸钾晶须(PTW)进行表面改性.通过测定苯、乙二醇、水在OTS改性的PTW压片上的接触角,计算了OTS改性PTW后的表面能和极性分量,并与传统方法(PMMA包裹和KH560表面改性)改性的PTW进行比较,结果表明,OTS改性的PTW具有更低的表面能和极性分量,以及更好的亲油疏水性能.IR分析和色散分量测定表明,改性后OTS的烷基链倾斜在PTW表面.

The surface modification of potassium titanate whiskers (PTW) with n-octadecyltrichlorosilane (OTS) through self-assembly process was investigated. The surface free energies and polar components of PTW modified with OTS were calculated by measuring contact angles of benzene, ethylene glycol, water on the palletized surfaces. The results showed that the surface free energies and polar components of PTW modified with OTS were lower than those of PTW modified with traditional ways, such as covered with PMMA or modified with silane coupling agent (KH560), thus PTW modified with OTS had more conspicuous lipophilicity and hydrophobicity. Moreover, the results of IR spectrum and apolar component of surface free energy showed that the alkyl chains of OTS tilted on the surface of PTW after the modification.