Is it possible to make a clear distinction between kitsch and sentimentality? It

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Is it possible to make a clear distinction between kitsch and sentimentality? It seems to me that many philosophers equate the sentimental with shallow and inauthentic, but I assume that most of them wouldn't say it always bad to be tenderly moved by a story or event. But at the same time it seems much popular literature, television, and film really aims to ratchet up the emotions: is this not problematic? Sorry, running different questions together, but I'm just trying to figure out how to understand when the sentimental is good and when it is not. Thank your for your interesting website.