Translation of "starch" into Japanese

澱粉

IPA : /stɑrʧ/

Come to that the uniform had a bit more starch than that I usually wear, it's a bit uncomfortable.

制服は私がいつも着ているものよりも少しでんぷんが多くて、少し不快です。

Please tell me how to use laundry starch to starch things.

洗濯でんぷんを使って物をでんぷんにする方法を教えてください。