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This paper investigated the interaction of α-Na 2 Si 2 O 5  and β-μNa 2 Si 2 O 5  with surfactants sodium dodecylbenzene sulfonate (LAS), sodium lauryl sulfate (K12), alkyl polyglycol ether-9 (AEO-9) and α-olefin hydrocarbon sulfonate (AOS) under condition approximating the detergent spray drying process. The interaction samples were characterized by XRD and TG. The experimental results showed that α-Na 2 Si 2 O 5  and β-Na 2 Si 2 O 5  sustained their phases after interacted with surfactants. The relative crystallinity of α-Na 2 Si 2 O 5  had little change after interacting with surfactants exception of AOS because it had better adsorbable effect on the surface of α-Na 2 Si 2 O 5  than LAS, K12 and AEO-9. At the same conditions, the amount of H 2 O and surfactants were both important factors on the relative crystallinity of β-μNa 2 Si 2 O 5 . It also was proved that the temperature had little influence on the relative crystallinity of both α-Na 2 Si 2 O 5  and β-Na 2 Si 2 O 5 . Compared with Al-δ-Na 2 Si 2 O 5 , α-Na 2 Si 2 O 5  and β-μNa 2 Si 2 O 5  were more stable than Al-δ-Na 2 Si 2 O 5  after interacted with surfactants.

Interaction between α, β Layered Sodium Disilicate and Surfactants